@mastersthesis {2277, title = {Surface and image-based registration methods with statistical modeling for biomedical applications}, volume = {PhD}, year = {2023}, type = {PhD thesis}, author = {Jeroen Van Houtte} } @inproceedings {2209, title = {Evaluation of a Morphable Anthropomorphic Articulated Total Body Model}, booktitle = {Design Tools and Methods in Industrial Engineering II - Proceedings of the 2nd International Conference on Design Tools and Methods in Industrial Engineering, ADM 2021}, year = {2022}, pages = {761{\textendash}772}, publisher = {Springer}, organization = {Springer}, abstract = {In this work a new approach for the creation of Articulated Total Body (ATB) models for person-specific multi-body simulations is presented, with the main aim of overcoming limitations related to classical multi-ellipsoids ATB models, based on regression equations having only the weight and the height of the subject as input. The new methodology is based on a Statistical Shape Model (SSM), morphable according to up to 24 input parameters: the SSM was obtained from Principal Component Analysis (PCA), applied on a wide database of 3D human scans (CAESAR). The so obtained geometry can be segmented automatically to generate body segments with the respective inertial properties (mass, principal moments of inertia, and centres of mass location). The routine has been tested on a random set of 20 male subjects and the classical multi-ellipsoids models were compared to these in terms of inertial properties and 3D external geometry: the highest differences were registered at the abdomen and the thighs for what concerns the mass (60\%), principal moments (75\%) and centres of mass (50 mm) properties; the trunk, the shoulder and the calves are the most critical areas for the external geometry (average distance between the anthropomorphic and ellipsoids models equal to 50 mm). A contribution has been made to build person-specific multibody models. This is a valuable method since approximations made by multi-ellipsoidal models have resulted to be relevant at specific body areas, and personalised models can be a support to design and to forensic analyses.}, keywords = {3D parametric human model, Articulated total body, Forensic biomechanics, Multibody analysis, principal component analysis (PCA)}, isbn = {978-3-030-91233-8}, doi = {10.1007/978-3-030-91234-5_77}, author = {Giulia Pascoletti and Toon Huysmans and Paolo Conti and Zanetti, Elisabetta M.}, editor = {Caterina Rizzi and Francesca Campana and Michele Bici and Francesco Gherardini and Tommaso Ingrassia and Paolo Cicconi} } @article {2210, title = {Feature preserving non-rigid iterative weighted closest point and semi-curvature registration}, journal = {IEEE Transactions on Image Processing}, year = {2022}, abstract = {Preserving features of a surface as characteristic local shape properties captured e.g. by curvature, during non-rigid registration is always difficult where finding meaningful correspondences, assuring the robustness and the convergence of the algorithm while maintaining the quality of mesh are often challenges due to the high degrees of freedom and the sensitivity to features of the source surface. In this paper, we present a non-rigid registration method utilizing a newly defined semi-curvature, which is inspired by the definition of the Gaussian curvature. In the procedure of establishing the correspondences, for each point on the source surface, a corresponding point on the target surface is selected using a dynamic weighted criterion defined on the distance and the semi-curvature. We reformulate the cost function as a combination of the semi-curvature, the stiffness, and the distance terms, and ensure to penalize errors of both the distance and the semi-curvature terms in a guaranteed stable region. For a robust and efficient optimization process, we linearize the semi-curvature term, where the region of attraction is defined and the stability of the approach is proven. Experimental results show that features of the local areas on the original surface with higher curvature values are better preserved in comparison with the conventional methods. In comparison with the other methods, this leads to, on average, 75\%, 8\% and 82\% improvement in terms of quality of correspondences selection, quality of surface after registration, and time spent of the convergence process respectively, mainly due to that the semi-curvature term logically increases the constraints and dependency of each point on the neighboring vertices based on the point{\textquoteright}s degree of curvature.}, keywords = {curvature, non-linearity, Non-rigid registration, region of attraction}, issn = {1057-7149}, doi = {10.1109/TIP.2022.3148822}, author = {Farzam Tajdari and Toon Huysmans and Yusheng Yang and Yu Song} } @mastersthesis {2271, title = {Quantitative assessment of 3D foot shape using statistical shape analysis}, volume = {PhD in Sciences}, year = {2022}, month = {10/2022}, type = {PhD thesis}, author = {Kristina Stankovi{\'c}} } @article {2146, title = {EquiSim: An open-source articulatable statistical model of the equine distal limb}, journal = {Frontiers in Veterinary Science }, volume = {8}, year = {2021}, doi = {10.3389/fvets.2021.623318}, author = {Jeroen Van Houtte and Filip Vandenberghe and Guoyan Zheng and Toon Huysmans and Jan Sijbers} } @article {2142, title = {Fracture patterns in midshaft clavicle fractures}, journal = {Acta Orthop Belg }, volume = {87}, year = {2021}, pages = {501-507}, doi = {https://doi.org/10.52628/87.3.16}, author = {Van Tongel, Alexander and Lieven De Wilde and Yasunori Shimamura and Jan Sijbers and Toon Huysmans} } @article {2211, title = {Brain Computer Interface}, year = {2020}, month = {01/2020}, publisher = {Universiteit Antwerpen}, chapter = {EP 3 597 102 A1; A61B 5/04 (2006.01),A61B 5/0476 (2006.01),A61B 5/00 (2006.01)"}, address = {Belgium}, abstract = {The present invention relates to an interfacingsystem for interfacing a plurality of elements to a surfaceof interest. The elements thereby are suitable for locallysensing a signal of the surface of interest or for locallyactuating the surface of interest. The interfacing systemcomprises a plurality of element holders, each elementholder being configured for holding an element for interfacingwith the surface of interest and each element holderbeing configured for providing a pressure exerted onthe element for interfacing the element with the surfaceof interest, the pressure being based on a fluidic actionin the element holder. The interfacing system also comprisesan outer shell interconnecting the plurality of elementholders. At least two of the plurality of element holdersfurther are fluidically interconnected so as to link thefluidic action in the at least two element holders therebylinking the pressure exerted by the element holders onthe elements.}, author = {Stijn Verwulgen and Daniel Lacko and Jochen Vleugels and Toon Huysmans and Steven Truijen} } @inproceedings {1951, title = {A Comparative Study Between Three Measurement Methods to Predict 3D Body Dimensions Using Shape Modelling}, booktitle = {Advances in Additive Manufacturing, Modeling Systems and 3D Prototyping}, volume = {975}, year = {2020}, pages = {464{\textendash}470}, publisher = {Springer International Publishing}, organization = {Springer International Publishing}, address = {Cham}, abstract = {In times of online shopping, it is a challenge to select the right size of the desired clothing without fitting it before ordering. Therefore, this study describes three techniques to predict 3D upper body dimensions. The first method used basic personal parameters (gender, age, weight and length), the second technique used also the shoulder width and the last method used a 3D Styku scan to add extra input parameters. The accuracy of the three prediction methods was compared against hand measurements for 17 upper body dimensions of 37 subjects. The Intraclass Correlation Coefficient increases with 11.2\% for the Styku method compared to the other methods. For chest, hip and waist measurements, the basic method is reliable to predict 3D body dimensions and indicate the right size from an existing collection. For more accurate upper body dimensions as needed for producing custom made clothing, a 3D Styku scan can supply the desired input.}, isbn = {978-3-030-20216-3}, doi = {10.1007/978-3-030-20216-3_43}, author = {Peeters, Thomas and Vleugels, Jochen and Verwulgen, Stijn and Femke Danckaers and Toon Huysmans and Jan Sijbers and De Bruyne, Guido}, editor = {Di Nicolantonio, Massimo and Rossi, Emilio and Alexander, Thomas} } @article {2011, title = {The effect of nasal shape on the thermal conditioning of inhaled air: Using clinical tomographic data to build a large-scale statistical shape model}, journal = {Computers in Biology and Medicine}, volume = {117}, year = {2020}, pages = {1-13}, doi = {https://doi.org/10.1016/j.compbiomed.2020.103600}, author = {Keustermans, William and Toon Huysmans and Bert Schmelzer and Jan Sijbers and Joris J. J. Dirckx} } @article {2017, title = {PAPPI: Personalized analysis of plantar pressure images using statistical modelling and parametric mapping}, journal = {PlosOne}, volume = {15}, year = {2020}, pages = {e0229685}, doi = {https://doi.org/10.1371/journal.pone.0229685}, author = {Brian G Booth and Eva Hoefnagels and Toon Huysmans and Jan Sijbers and No{\"e}l L.W. Keijsers} } @article {2030, title = {Subject-specific identification of three dimensional foot shape deviations using statistical shape analysis}, journal = {Expert Systems With Applications}, volume = {151}, year = {2020}, pages = {1-11}, doi = {https://doi.org/10.1016/j.eswa.2020.113372}, author = {Kristina Stankovi{\'c} and Toon Huysmans and Femke Danckaers and Jan Sijbers and Brian G Booth} } @inproceedings {1931, title = {A 3D Printed Thermal Manikin Head for Evaluating Helmets for Convective and Radiative Heat Loss}, booktitle = {Proceedings of the 20th Congress of the International Ergonomics Association (IEA 2018) Volume VII}, volume = {VII}, year = {2019}, pages = {592{\textendash}602}, publisher = {Springer International Publishing}, organization = {Springer International Publishing}, abstract = {Thermal performance of three bicycle helmets for radiative and convective heat loss was evaluated through heat loss experiments in a wind tunnel. A 3D printed thermal manikin head of a 50th percentile western male population was developed. Thermal performance of a helmet was quantified by comparing the manikin head heat losses with and without helmet. Experiments were performed for two air velocities: 1.6 m/s and 6 m/s. An infrared heat lamp positioned above the manikin simulated the effect of solar load. The results from the experiments showed a convective cooling efficiency between 89{\%} and 96{\%} for open helmets and between 78{\%} and 83{\%} for closed helmets. The radiative heat gain ranged from 3.5 W to 4.5 W for open helmets and 5 W to 8 W for closed helmets.}, keywords = {Convective heat loss, Heat transfer, Helmet thermal performance, Radiative heat gain, Thermal manikin head, Wind tunnel}, isbn = {978-3-319-96070-8}, doi = {10.1007/978-3-319-96071-5_63}, author = {Shriram Mukunthan and Jochen Vleugels and Toon Huysmans and Mayor, Tiago Sotto and De Bruyne, Guido} } @inbook {1960, title = {Adaptable digital human models from 3D body scans}, booktitle = {DHM and Posturography}, volume = {VI}, year = {2019}, pages = {459-470}, publisher = {Academic Press}, organization = {Academic Press}, chapter = {33}, doi = {https://doi.org/10.1016/B978-0-12-816713-7.00033-7}, author = {Femke Danckaers and Toon Huysmans and Jan Sijbers} } @conference {1924, title = {Advancing Analysis Techniques for Plantar Pressure Videos via Open-Access Contributions}, year = {2019}, author = {Brian G Booth and No{\"e}l L.W. Keijsers and Toon Huysmans and Jan Sijbers} } @article {1955, title = {Aortic root sizing for transcatheter aortic valve implantation using a shape model parameterisation}, journal = {Medical \& Biological Engineering \& Computing}, volume = {57}, year = {2019}, month = {Jul}, pages = {2081{\textendash}2092}, abstract = {During a transcatheter aortic valve implantation, an axisymmetric implant is placed in an irregularly shaped aortic root. Implanting an incorrect size can cause complications such as leakage of blood alongside or through the implant. The aim of this study was to construct a method that determines the optimal size of the implant based on the three-dimensional shape of the aortic root. Based on the pre-interventional computed tomography scan of 89 patients, a statistical shape model of their aortic root was constructed. The weights associated with the principal components and the volume of calcification in the aortic valve were used as parameters in a classification algorithm. The classification algorithm was trained using the patients with no or mild leakage after their intervention. Subsequently, the algorithms were applied to the patients with moderate to severe leakage. Cross validation showed that a random forest classifier assigned the same size in 65 {\textpm} 7\% of the training cases, while 57 {\textpm} 8\% of the patients with moderate to severe leakage were assigned a different size. This initial study showed that this semi-automatic method has the potential to correctly assign an implant size. Further research is required to assess whether the different size implants would improve the outcome of those patients.}, issn = {1741-0444}, doi = {10.1007/s11517-019-01996-x}, author = {Bosmans, Bart and Toon Huysmans and Lopes, Patricia and Verhoelst, Eva and Dezutter, Tim and de Jaegere, Peter and Jan Sijbers and Vander Sloten, Jos and Bosmans, Johan} } @inproceedings {1854, title = {An Articulating Statistical Shape Model of the Human Hand}, booktitle = {Advances in Human Factors in Simulation and Modeling (AHFE 2018)}, volume = {780}, year = {2019}, pages = {433{\textendash}445}, publisher = {Springer International Publishing}, organization = {Springer International Publishing}, address = {Cham}, abstract = {This paper presents a registration framework for the construction of a statistical shape model of the human hand in a standard pose. It brings a skeletonized reference model of an individual human hand into correspondence with optical 3D surface scans of hands by sequentially applying articulation-based registration and elastic surface registration. Registered surfaces are then fed into a statistical shape modelling algorithm based on principal component analysis. The model-building technique has been evaluated on a dataset of optical scans from 100 healthy individuals, acquired with a 3dMD scanning system. It is shown that our registration framework provides accurate geometric and anatomical alignment, and that the shape basis of the resulting statistical model provides a compact representation of the specific population. The model also provides insight into the anatomical variation of the lower arm and hand, which is useful information for the design of well-fitting products.}, isbn = {978-3-319-94223-0}, doi = {10.1007/978-3-319-94223-0_41}, author = {Jeroen Van Houtte and Kristina Stankovi{\'c} and Brian G Booth and Femke Danckaers and Bertrand, V{\'e}ronique and Frederik Verstreken and Jan Sijbers and Toon Huysmans}, editor = {Cassenti, Daniel N.} } @article {1927, title = {An assessment of the information lost when applying data reduction techniques to dynamic plantar pressure measurements}, journal = {Journal of Biomechanics }, volume = {87}, year = {2019}, pages = {161-166}, doi = {https://doi.org/10.1016/j.jbiomech.2019.02.008}, author = {Brian G Booth and No{\"e}l L.W. Keijsers and Jan Sijbers and Toon Huysmans} } @inproceedings {1852, title = {Automatic Generation of Statistical Shape Models in Motion}, booktitle = {Advances in Human Factors in Simulation and Modeling (AHFE 2018)}, volume = {780}, year = {2019}, pages = {170{\textendash}178}, publisher = {Springer International Publishing}, organization = {Springer International Publishing}, address = {Cham}, abstract = {Statistical body shape modeling (SBSM) is a well-known technique to map out the variability of body shapes and is commonly used in 3D anthropometric analyses. In this paper, a new approach to integrate movement acquired by a motion capture system with a body shape is proposed. This was done by selecting landmarks on a body shape model, and predicting a body shape based on features. Then, a virtual skeleton was generated relative to those landmarks. This skeleton was parented to a body shape, allowing to modify its pose and to add pre-recorded motion to different body shapes in a realistic way.}, isbn = {978-3-319-94223-0}, doi = {10.1007/978-3-319-94223-0_16}, author = {Femke Danckaers and Scataglini, Sofia and Haelterman, Robby and Van Tiggelen, Damien and Toon Huysmans and Jan Sijbers}, editor = {Cassenti, Daniel N.} } @inproceedings {1932, title = {A Comparison Between Representative 3D Faces Based on Bi- and Multi-variate and Shape Based Analysis}, booktitle = {Proceedings of the 20th Congress of the International Ergonomics Association (IEA 2018)- Volume VII}, volume = {VII}, year = {2019}, pages = {1355{\textendash}1364}, publisher = {Springer International Publishing}, organization = {Springer International Publishing}, abstract = {In Ergonomic product design, designers need to translate anthropometric data of the target population into product dimensions or sizing systems. Currently, sizing systems are often based on traditional anthropometric data and generally use the variation of one or two key body dimensions directly related to the product. For products that need to closely fit a certain part of the body it is relevant to incorporate multiple key dimensions. This can be realized by a multivariate approach such as a Principal Component Analysis. Over the past decades, there has been an increase in incorporating 3D imaging in anthropometric surveys. In order to integrate the use of 3D anthropometry in product sizing, representative models are used to visualize the variability of the target population. For the development of a ventilation mask for children, this study compares representative models of 3D faces based on a bivariate, multivariate and shape based analysis of 303 children{\textquoteright}s faces.}, keywords = {3D anthropometry, Children, Design, Product sizing, Ventilation mask}, isbn = {978-3-319-96070-8}, doi = {10.1007/978-3-319-96071-5_137}, author = {Ly{\`e} Goto and Toon Huysmans and Wonsup Lee and Molenbroek, Johan F. M. and Richard Goossens} } @inbook {1961, title = {Design smart clothing using digital human models}, booktitle = {DHM and Posturography}, year = {2019}, pages = {683-698}, publisher = {Academic Press}, organization = {Academic Press}, doi = {https://doi.org/10.1016/B978-0-12-816713-7.00053-2}, author = {Scataglini, Sofia and Femke Danckaers and Toon Huysmans and Jan Sijbers and Giuseppe Andreoni} } @inproceedings {1850, title = {Determining Comfortable Pressure Ranges for Wearable EEG Headsets}, booktitle = {Advances in Human Factors in Wearable Technologies and Game Design}, year = {2019}, pages = {11{\textendash}19}, publisher = {Springer International Publishing}, organization = {Springer International Publishing}, address = {Cham}, abstract = {Measuring and interpretation of brain wave signals through electroencephalography (EEG) is an emerging technology. The technique is traditionally applied in a clinical setting with EEG caps and conductive gels to ensure proper contact through a subject{\textquoteright}s hair, and anticipate inter-subject anthropometric variations. Development of dry electrodes offers the potential to develop wearable EEG headsets. Such devices could induce medical and commercial applications. In this paper, we evaluate a prototype EEG headset that actively places electrodes at standardized positions on the subject{\textquoteright}s head, where each electrode is applied with equal pressure. The system is designed for use with dry electrodes. Our research delivers a better understanding on the link between general level of comfort and possible useful clear data signals, that can be used in brain computer interfaces (BCI). The present study is confined to the impact of adjustable electrodes pressure on level of user comfort only. Levels of discomfort are assessed in twelve participants, wearing an EEG headset with controllable electrode pressure exerted at 14 locations. Of-the-shelf dry electrodes are used. In a first session, evenly distributed pressure is increased and afterwards decreased in fixed time intervals, going from 10~kPa to 30~kPa and vice versa with steps of 2~kPa. In a second session, a subject specific acceptable pressure level is retrieved from the data of the first session and constantly applied for 30~min. During this intervention, level of discomfort is assessed in a VAS-scale. Additional observation and surveys yields insights on user experience in wearing a pressure exerting EEG headset.}, isbn = {978-3-319-94619-1}, author = {Stijn Verwulgen and Daniel Lacko and Justine, Hoppenbrouwers and Kustermans, Siemon and Moons, Stine and Thys, Falk and Zelck, Sander and Vaes, Kristof and Toon Huysmans and Jochen Vleugels and Steven Truijen}, editor = {Ahram, Tareq Z.} } @mastersthesis {1930, title = {The Development of 3D Statistical Shape Models for Diverse Applications}, volume = {PhD in Sciences}, year = {2019}, type = {PhD thesis}, author = {Femke Danckaers} } @inproceedings {1851, title = {Latent Heat Loss of a Virtual Thermal Manikin for Evaluating the Thermal Performance of Bicycle Helmets}, booktitle = {Advances in Human Factors in Simulation and Modeling}, year = {2019}, pages = {66{\textendash}78}, publisher = {Springer International Publishing}, organization = {Springer International Publishing}, address = {Cham}, abstract = {Thermal performance of three bicycle helmets for latent heat loss was evaluated through a virtual testing methodology using Computational fluid dynamics (CFD) simulations. The virtual thermal manikin was prescribed with a constant sweat rate of 2~g/h and a constant sweat film thickness of 0.3~mm. The simulations were carried out at 6~m/s until convergence was achieved. The results from steady state simulations show heat loss of 158~W from manikin without helmet and approximately 135~W with helmets. However, the thermal performance of helmets with a sweating manikin has been reduced from 89{\textendash}93{\%} to 84{\textendash}87{\%}. These results imply that evaporative/latent heat loss plays a significant role in thermal performance of helmets. Therefore, thermal performance tests for helmets should also include testing of helmets for evaporative heat loss.}, isbn = {978-3-319-94223-0}, author = {Mukunthan, Shriram and Jochen Vleugels and Toon Huysmans and Guido De Bruyne}, editor = {Cassenti, Daniel N.} } @article {1914, title = {Matlab{\textregistered} toolbox for semi-automatic segmentation of the human nasal cavity based on active shape modeling}, journal = {Computers in Biology and Medicine}, volume = {105}, year = {2019}, pages = {27-38}, doi = {10.1016/j.compbiomed.2018.12.008}, author = {Keustermans, William and Toon Huysmans and Bert Schmelzer and Jan Sijbers and Joris J. J. Dirckx} } @inproceedings {1873, title = {Moving Statistical Body Shape Models Using Blender}, booktitle = {Proceedings of the 20th Congress of the International Ergonomics Association (IEA 2018)}, year = {2019}, pages = {28{\textendash}38}, publisher = {Springer International Publishing}, organization = {Springer International Publishing}, address = {Cham}, abstract = {In this paper, we present a new framework to integrate movement acquired by a motion capture system to a statistical body shape model using Blender. This provides a visualization of a digital human model based upon anthropometry and biomechanics of the subject. A moving statistical body shape model helps to visualize physical tasks with inter-individual variability in body shapes as well as anthropometric dimensions. This parametric modeling approach is useful for reliable prediction and simulation of the body shape movement of a specific population with a few given predictors such as stature, body mass index and age.}, isbn = {978-3-319-96077-7}, doi = {10.1007/978-3-319-96077-7_4}, author = {Scataglini, Sofia and Femke Danckaers and Haelterman, Robby and Toon Huysmans and Jan Sijbers}, editor = {Bagnara, Sebastiano and Tartaglia, Riccardo and Albolino, Sara and Alexander, Thomas and Fujita, Yushi} } @inproceedings {1853, title = {Multi-patch B-Spline Statistical Shape Models for CAD-Compatible Digital Human Modeling}, booktitle = {Advances in Human Factors in Simulation and Modeling}, year = {2019}, pages = {179{\textendash}189}, publisher = {Springer International Publishing}, organization = {Springer International Publishing}, address = {Cham}, abstract = {Parametric 3D human body models are valuable tools for ergonomic product design and statistical shape modelling (SSM) is a powerful technique to build realistic body models from a database of 3D scans. Like the underlying 3D scans, body models built from SSMs are typically represented with triangle meshes. Unfortunately, triangle meshes are not well supported by CAD software where spline geometry dominates. Therefore, we propose a methodology to convert databases of pre-corresponded triangle meshes into multi-patch B-spline SSMs. An evaluation on four 3D scan databases shows that our method is able to generate accurate and water-tight models while preserving inter-subject correspondences by construction. In addition, we demonstrate that such SSMs can be used to generate design manikins which can be readily used in SolidWorks for designing well conforming product parts.}, isbn = {978-3-319-94223-0}, doi = {10.1007/978-3-319-94223-0_17}, author = {Toon Huysmans and Femke Danckaers and Jochen Vleugels and Daniel Lacko and Guido De Bruyne and Stijn Verwulgen and Jan Sijbers} } @article {1893, title = {Posture normalization of 3D body scans}, journal = {Ergonomics}, volume = {62}, year = {2019}, pages = {834-848}, doi = {10.1080/00140139.2019.1581262}, author = {Femke Danckaers and Toon Huysmans and Ann Hallemans and Guido De Bruyne and Steven Truijen and Jan Sijbers} } @inproceedings {1874, title = {Using 3D Statistical Shape Models for Designing Smart Clothing}, booktitle = {Proceedings of the 20th Congress of the International Ergonomics Association (IEA 2018)}, year = {2019}, pages = {18{\textendash}27}, publisher = {Springer International Publishing}, organization = {Springer International Publishing}, address = {Cham}, abstract = {In this paper we present an innovative approach to design smart clothing using statistical body shape modeling (SBSM) from the CAESAR{\texttrademark} dataset. A combination of different digital technologies and applications are used to create a common co-design workflow for garment design. User and apparel product design and developers can get personalized prediction of cloth sizing, fitting and aesthetics.}, isbn = {978-3-319-96077-7}, doi = {10.1007/978-3-319-96077-7_3}, author = {Scataglini, Sofia and Femke Danckaers and Haelterman, Robby and Toon Huysmans and Jan Sijbers and Andreoni, Giuseppe}, editor = {Bagnara, Sebastiano and Tartaglia, Riccardo and Albolino, Sara and Alexander, Thomas and Fujita, Yushi} } @article {2000, title = {Women{\textquoteright}s preferences for male facial masculinity are not condition-dependent in a large online study}, journal = {The All Results Journals: Biol}, volume = {10}, year = {2019}, type = { A3 Journal article }, abstract = {While several studies have found evidence for conditional-dependent effect on women{\textquoteright}s preferences for male masculinity, others have questioned the relative importance of these effects. In this study, we evaluated variation in women{\textquoteright}s preference for male facial masculinity in a forced-choice experiment. Nearly 1200 participants scored preference for manipulated photos and surface scans. Between-individual variation in preferences were relatively small, especially for the evaluation of the surface scans. Nevertheless, preferences from the evaluations of photos and scans correlated positively, indicating that both stimuli provide similar biological information. Only few condition-dependent variables correlated significantly with preference for masculinity, and not all in predicted directions. Stronger preference for masculine male faces {\textendash} albeit only significant for the photos {\textendash} with higher own women attractiveness was observed as expected. Yet, for perceived infectability, consistently across the photos and scans, a negative association with preference for masculine faces was observed, which is opposite to theoretical predictions. In addition, no effects of pathogen exposure, germ aversion (a correlate of disgust), relational status, preference for short term relationships and sociosexuality were detected. Thus, overall, our study is in line with recent large studies that also find only very weak conditiondependent effects, if any.}, issn = {21724784}, author = {Van Dongen, Stefan and Femke Danckaers and Beerten, Jessie and Toon Huysmans} } @inproceedings {1933, title = {Capturing Joint Angles of the Off-Site Human Body}, booktitle = {IEEE Sensors 2018}, year = {2018}, pages = {1{\textendash}4}, publisher = {IEEE}, organization = {IEEE}, address = {United States}, abstract = {Motion capture (mocap) is traditionally conducted by optical systems. These are expensive and usually limited to controlled environments. We investigated the accuracy of portable and inexpensive mocap sensor systems compared to benchmark optical systems with respect to tracking joint angles. This review summarizes the findings of 21 studies. In these studies, 228 subjects were employed, and 16 joints were tracked, spanning a range of activities. We did not find a system that is consistent and equally accurate across all joint angles for all activities (root mean square error up to 12.1 degrees). However, under some ideal conditions, the results are on par with optical mocap. Our recommendations for future research and development are to focus on tracking faster activities, activities in off-site conditions, and following standardized biomechanical models of joint angles.}, keywords = {IMU, joint kinematics, motion capture, off-site, wearable}, isbn = {978-1-5386-4708-0}, doi = {10.1109/ICSENS.2018.8589711}, author = {Raman Garimella and Thomas Peeters and Koen Beyers and Steven Truijen and Toon Huysmans and Stijn Verwulgen} } @inproceedings {1770, title = {A Combined Statistical Shape Model of the Scalp and Skull of the Human Head}, booktitle = { 8th International Conference on Applied Human Factors and Ergonomics (AHFE 2017)}, volume = {591}, year = {2018}, pages = {538-548}, publisher = {Springer}, organization = {Springer}, address = {Los Angeles, California, USA}, doi = {10.1007/978-3-319-60591-3_49}, author = {Femke Danckaers and Daniel Lacko and Stijn Verwulgen and Guido De Bruyne and Toon Huysmans and Jan Sijbers} } @inproceedings {1769, title = {Full Body Statistical Shape Modeling with Posture Normalization}, booktitle = {The 8th International Conference on Applied Human Factors and Ergonomics (AHFE 2017)}, volume = {591}, year = {2018}, pages = {437-448}, publisher = {Springer}, organization = {Springer}, address = {Los Angeles, California, USA}, doi = {10.1007/978-3-319-60591-3_39}, author = {Femke Danckaers and Toon Huysmans and Ann Hallemans and Guido De Bruyne and Steven Truijen and Jan Sijbers} } @article {1912, title = {High quality statistical shape modelling of the human nasal cavity and applications}, journal = {Royal Society Open Science}, volume = {5}, year = {2018}, doi = {https://doi.org/10.1098/rsos.181558}, author = {Keustermans, William and Toon Huysmans and Femke Danckaers and Andrzej Zarowski and Bert Schmelzer and Jan Sijbers and Joris J. J. Dirckx} } @conference {1860, title = {Investigating the relationship between shape and flow in the human nose using a statistical shape model}, year = {2018}, url = {http://www.eccm-ecfd2018.org/admin/files/fileabstract/a781.pdf}, author = {Keustermans, William and Toon Huysmans and Femke Danckaers and Andrzej Zarowski and Bert Schmelzer and Jan Sijbers and Joris J. J. Dirckx} } @article {1866, title = {A new data structure and workflow for using 3D anthropometry in the design of wearable products}, journal = {International Journal of Industrial Ergonomics}, volume = {64}, year = {2018}, pages = {108 - 117}, keywords = {3D anthropometry, CAD, EEG headsets, Mass-customization, Parameterized design, Statistical shape models}, issn = {0169-8141}, doi = {https://doi.org/10.1016/j.ergon.2018.01.002}, url = {http://www.sciencedirect.com/science/article/pii/S0169814117302342}, author = {Stijn Verwulgen and Daniel Lacko and Jochen Vleugels and Kristof Vaes and Femke Danckaers and Guido De Bruyne and Toon Huysmans} } @article {1935, title = {Principal component analysis as a tool for determining optimal tibial baseplate geometry in modern TKA design}, journal = {Acta Orthop Belg}, volume = {84}, year = {2018}, pages = {452-460}, author = {Sare Huijs and Toon Huysmans and A De Jong and Nele Arnout and Jan Sijbers and Johan Bellemans} } @article {1837, title = {STAPP: SpatioTemporal Analysis of Plantar Pressure Measurements using Statistical Parametric Mapping}, journal = {Gait and Posture}, volume = {3}, year = {2018}, pages = {268-275}, abstract = {Background: Pedobarography produces large sets of plantar pressure samples that are routinely subsampled (e.g. using regions of interest) or aggregated (e.g. center of pressure trajectories, peak pressure images) in order to simplify statistical analysis and provide intuitive clinical measures. Research Question: We hypothesize that these data reductions discard gait information that can be used to differentiate between groups or conditions. Methods: To test the hypothesis of null information loss, we created an implementation of statistical parametric mapping (SPM) for dynamic plantar pressure datasets (i.e. plantar pressure videos). Our SPM software framework brings all plantar pressure videos into anatomical and temporal correspondence, then performs statistical tests at each sampling location in space and time. Novelly, we introduce non-linear temporal registration into the framework in order to normalize for timing differences within the stance phase. We refer to our software framework as STAPP: spatiotemporal analysis of plantar pressure measurements. Using STAPP, we tested our hypothesis on plantar pressure videos from 33 healthy subjects walking at different speeds. Results: As walking speed increased, STAPP was able to identify significant decreases in plantar pressure at mid-stance from the heel through the lateral forefoot. The extent of these plantar pressure decreases have not previously been observed using existing plantar pressure analysis techniques. Significance: We therefore conclude that the subsampling of plantar pressure videos - a task which led to the discarding of gait information in our study - can be avoided using STAPP.}, doi = {10.1016/j.gaitpost.2018.04.029}, author = {Brian G Booth and No{\"e}l L.W. Keijsers and Jan Sijbers and Toon Huysmans} } @article {1865, title = {A three-dimensional digital neurological atlas of the mustached bat (Pteronotus parnellii)}, journal = {NeuroImage}, volume = {183}, year = {2018}, pages = {300-313}, issn = {10538119}, doi = {10.1016/j.neuroimage.2018.08.013}, url = {https://linkinghub.elsevier.com/retrieve/pii/S1053811918307110https://api.elsevier.com/content/article/PII:S1053811918307110?httpAccept=text/xmlhttps://api.elsevier.com/content/article/PII:S1053811918307110?httpAccept=text/plain}, author = {Washington, Stuart D. and Hamaide, Julie and Ben Jeurissen and Gwendolyn Van Steenkiste and Toon Huysmans and Jan Sijbers and Deleye, Steven and Kanwal, Jagmeet S. and De Groof, Geert and Liang, Sayuan and Johan Van Audekerke and Wenstrup, Jeffrey J. and Annemie Van Der Linden and Radtke-Schuller, Susanne and Marleen Verhoye} } @article {1838, title = {Three-dimensional quantitative analysis of healthy foot shape: a proof of concept study}, journal = {Journal of Foot and Ankle Research}, volume = {11}, year = {2018}, month = {Mar}, pages = {1-13}, abstract = {Background Foot morphology has received increasing attention from both biomechanics researches and footwear manufacturers. Usually, the morphology of the foot is quantified by 2D footprints. However, footprint quantification ignores the foot{\textquoteright}s vertical dimension and hence, does not allow accurate quantification of complex 3D foot shape. Methods The shape variation of healthy 3D feet in a population of 31 adult women and 31 adult men who live in Belgium was studied using geometric morphometric methods. The effect of different factors such as sex, age, shoe size, frequency of sport activity, Body Mass Index (BMI), foot asymmetry, and foot loading on foot shape was investigated. Correlation between these factors and foot shape was examined using multivariate linear regression. Results The complex nature of a foot{\textquoteright}s 3D shape leads to high variability in healthy populations. After normalizing for scale, the major axes of variation in foot morphology are (in order of decreasing variance): arch height, combined ball width and inter-toe distance, global foot width, hallux bone orientation (valgus-varus), foot type (e.g. Egyptian, Greek), and midfoot width. These first six modes of variation capture 92.59\% of the total shape variation. Higher BMI results in increased ankle width, Achilles tendon width, heel width and a thicker forefoot along the dorsoplantar axis. Age was found to be associated with heel width, Achilles tendon width, toe height and hallux orientation. A bigger shoe size was found to be associated with a narrow Achilles tendon, a hallux varus, a narrow heel, heel expansion along the posterior direction, and a lower arch compared to smaller shoe size. Sex was found to be associated with differences in ankle width, Achilles tendon width, and heel width. Frequency of sport activity was associated with Achilles tendon width and toe height. Conclusion A detailed analysis of the 3D foot shape, allowed by geometric morphometrics, provides insights in foot variations in three dimensions that can not be obtained from 2D footprints. These insights could be applied in various scientific disciplines, including orthotics and shoe design.}, issn = {1757-1146}, doi = {10.1186/s13047-018-0251-8}, url = {https://doi.org/10.1186/s13047-018-0251-8}, author = {Kristina Stankovi{\'c} and Brian G Booth and Femke Danckaers and Fien Burg and Vermaelen, Philippe and Saartje Duerinck and Jan Sijbers and Toon Huysmans} } @article {1779, title = {Building 3D Statistical Shape Models of Horticultural Products}, journal = {Food and Bioprocess Technology}, volume = {10}, year = {2017}, pages = {2100-2112}, doi = {10.1007/s11947-017-1979-z }, author = {Femke Danckaers and Toon Huysmans and Mattias Van Dael and Pieter Verboven and Bart Nicolai and Jan Sijbers} } @inproceedings {1771, title = {A Comparison Between Physical and Virtual Experiments of Convective Heat Transfer Between Head and Bicycle Helmet}, booktitle = {8th International Conference on Applied Human Factors and Ergonomics (AHFE 2017)}, year = {2017}, publisher = {Springer}, organization = {Springer}, address = {Los Angeles, California, USA}, author = {Shriram Mukunthan and Kalev Kuklane and Toon Huysmans and Guido De Bruyne} } @article {1676, title = {Ergonomic design of an EEG headset using 3D anthropometry}, journal = {Applied Ergonomics}, volume = {58}, year = {2017}, month = {2017}, pages = {128{\textendash}136}, doi = {doi:10.1016/j.apergo.2016.06.002}, author = {Daniel Lacko and Jochen Vleugels and Erik Fransen and Toon Huysmans and Guido De Bruyne and Marc M. Van Hulle and Jan Sijbers and Stijn Verwulgen} } @conference {1768, title = {Fracture Patterns In Midshaft Clavicle Fracture}, year = {2017}, author = {Van Tongel, Alexander and Lieven De Wilde and Ken De Smet and Thomas Decock and Edward Van Herzele and Robin Van Den Broecke and Yasunori Shimamura and Jan Sijbers and Toon Huysmans} } @article {1774, title = {Product sizing with 3D anthropometry and k-medoids clustering}, journal = {Computer-Aided Design}, volume = {91}, year = {2017}, pages = {60-74}, doi = {https://doi.org/10.1016/j.cad.2017.06.004}, author = {Daniel Lacko and Toon Huysmans and Jochen Vleugels and Guido De Bruyne and Marc M. Van Hulle and Jan Sijbers and Stijn Verwulgen} } @conference {1760, title = {Screw fixation of simulated scaphoid waist fractures: a biomechanical comparison of two screw lengths.}, year = {2017}, abstract = {Background: Sixty percent of carpal bone fractures affect the scaphoid. These fractures typically occur in a young and male population, with a mean age of 25 years. Eighty percent of scaphoid fractures are located at the waist and the majority of these fractures is nondisplaced and stable. The poor healing capacity of scaphoid fractures, frequently causes delayed- or nonunion, leading to impaired function, early degenerative changes and chronic wrist pain.. Adequate treatment is therefore essential. Scaphoid fractures can be managed with a cast or with screw fixation. The latter offers a shorter time of immobilisation with a faster return to function, whilst having the same long-term outcome. Ideal screw length is an area of discussion. Theoretically, longer screws provide more stability, but there is a higher risk of protrusion of the screw in the cartilage resulting in more adverse effects. Objectives: The goal of this study was to compare the fixation strength for long and short screws in order to evaluate if the choice for the longer screw is worth the increased risk of protrusion. Study design \& methods: Thirteen pairs of fresh frozen cadaveric scaphoids were randomized to have one side fixed with a long and one with a shorter screw (longest screw possible and longest length minus 4 mm). Under fluoroscopic control a central guidewire was inserted and a cannulated screw placed. A wedge osteotomy was made to simulate a horizontal oblique fracture plane. The proximal pole of the scaphoid was placed into a fixture. Load was applied by using a load-controlled test protocol in a hydraulic testing machine and displacement was measured. Results: There was no significant difference between the load at 1 and 2mm displacement for long and short screws. The load at 1 and 2 mm displacement was 40.9 N (SEM 7.0 N; 90\% CI 28.4-53.5 N) and 80.9 N (SEM 11.0 N; 90\% CI 61.1-100.7 N) for the short screws compared with 50.4 N (SEM 10.2 N; 32.0-68.8 N) and 92.6 N (SEM 15.6 N; 64.5-120.7 N) for the long screws. An equivalence test based on the mean and 90\% CI showed that these values are equivalent. Conclusions: These data suggest that in oblique waist fracture, fixation with a long or a short screw are equivalent in strength. Given the higher risk of complications with longer screws, a shorter screw is advisable and has no negative impact on the stability of the construct. }, author = {Maarten Ouwendijk and Niek Slingerland and Job van Nistelrooij and Toon Huysmans and Elke Van de Casteele and Francis Van Glabbeek and Geert Meermans and Frederik Verstreken} } @article {1644, title = {3D morphometric analysis of the human incudomallear complex using clinical cone-beam CT}, journal = {Hearing research}, volume = {340}, year = {2016}, pages = {79-88}, abstract = {Human middle ears show large morphological variations. This could affect our perception of hearing and explain large variation in experimentally obtained transfer functions. Most morphological studies focus on capturing variation by using landmarks on cadaveric temporal bones. We present statistical shape analysis based on clinical cone beam CT (CBCT) scans of 100 patients. This allowed us to include surface information on the incudomallear (IM) complex (joint, ligaments and tendon not included) of 123 healthy ears with a scanning resolution of 150~μm and without a priori assumptions. Statistical shape modeling yields an average geometry for the IM complex and the variations present in the population with a high precision. Mean values, variation and correlations among anatomical features (length of manubrium, combined length of malleus head and neck, lengths of incus long and short process, enclosing angles, ossicular lever ratio, incudomallear angle, and principal moments of inertia) are reported and compared to results from the literature. Most variation is found in overall size and the angle between incus and malleus. The compact representation provided by statistical shape modeling is demonstrated and its benefits for surface modeling are discussed.}, issn = {1878-5891}, doi = {10.1016/j.heares.2016.01.014}, author = {Joris Soons and Femke Danckaers and Keustermans, William and Toon Huysmans and Jan Sijbers and Casselman, Jan W and Joris J. J. Dirckx} } @conference {1643, title = {Building 3D Statistical Shape Models of Vegetables and Fruit}, year = {2016}, abstract = {Introduction Statistical shape modeling is a promising approach to map out the variability of a population. By adapting the parameters of the shape model, a new, realistic surface can be obtained. In this work, the framework for surface registration and building a statistical shape model of fruit is described. Method The framework consists of two parts. First, a reference surface is registered to each fruit. Based on the correspondences that resulted from this surface registration, a statistical shape model is built. In the surface registration part, a reference surface is registered to a target surface, such that the geometric distance between those surfaces becomes minimal while maintaining correspondences. The second part of our framework consists of building a statistical shape model based on the correspondences that resulted from the surface registration (Fig. 1). The model is built by performing principal components analysis on the corresponding points matrix of the population. In this model, the mean surface and the main shape modes are captured. Parametrization of a surface is the task of defining a map between the surface and a simple parameter domain, such as a cylinder or sphere, so each fruit in the model can be described using basis functions, such as B-splines. This is a very compact representation and is useful in CAD and finite-element environments, so the models can be used for simulations. Results Experiments resulted in better correspondences than the current state-of-the-art. This means that our shape model is a good representation of the population and adapting the shape model parameters will lead to a realistic surface. Applications Possible applications of a statistical shape model of fruit are predicting the final size of the fruit, search for correlations between stages of growth, estimate the volume from a single view and evaluation of the effect of the fruit shape on airflow characteristics to obtain cooling uniformity.}, author = {Femke Danckaers and Toon Huysmans and Jan Sijbers} } @conference {1694, title = {Building a statistical shape model of the interior and exterior of the bell pepper}, volume = {28-30 November}, year = {2016}, address = {Vienna, Austria}, author = {Femke Danckaers and Toon Huysmans and Seppe Rogge and Mattias Van Dael and Pieter Verboven and Bart Nicolai and Jan Sijbers} } @article {1683, title = {Chronic exposure to haloperidol and olanzapine leads to common and divergent shape changes in the rat hippocampus in the absence of grey-matter volume loss}, journal = {Psychological Medicine}, volume = {46}, year = {2016}, pages = {3081-3093}, doi = {10.1017/S0033291716001768}, author = {William R Crum and Femke Danckaers and Toon Huysmans and Marie-Caroline Cotel and Sridhar Natesan and Michel M. Modo and Jan Sijbers and Steven C.R. Williams and Shitij Kapur and Anthony C. Vernon} } @conference {1728, title = {Combining 3D vision and X-ray radiography for internal quality inspection of foods}, year = {2016}, month = {28-30 November}, address = {Austrian Economic Chamber, Vienna, Austria}, author = {Mattias Van Dael and Femke Danckaers and Thomas De Schryver and Toon Huysmans and Pieter Verboven and Luc Van Hoorebeke and Jan Sijbers and Bart Nicolai} } @inproceedings {1696, title = {Evaluation of the thickness of hair layer from 3D scans and medical images}, booktitle = {7th International Conference and Exhibition on 3D Body Scanning Technologies (3DBST)}, year = {2016}, edition = {Lugano, Switzerland, 30 November - 1 December}, author = {Stijn Verwulgen and Jochen Vleugels and Daniel Lacko and Guido De Bruyne and Toon Huysmans} } @inproceedings {1695, title = {Foot Abnormality Mapping using Statistical Shape Modelling}, booktitle = {7th International Conference and Exhibition on 3D Body Scanning Technologies (3DBST)}, year = {2016}, pages = {70-79}, edition = {Lugano, Switzerland, 30 November - 1 December}, doi = {doi:10.15221/16.070}, author = {Kristina Stankovi{\'c} and Femke Danckaers and Brian G Booth and Fien Burg and Saartje Duerinck and Jan Sijbers and Toon Huysmans} } @article {1730, title = {Orthosis}, number = { WO/2016/181282}, year = {2016}, url = {https://www.google.com/patents/WO2016181282A1?cl=en}, author = {Toon Huysmans and Jan Sijbers and Frederik Verstreken} } @conference {1613, title = {3D evaluation of clavicle fractures}, year = {2015}, author = {Van Tongel, Alexander and Toussaint,, Arnaud and Lieven De Wilde and Toon Huysmans} } @article {1582, title = {Building a Statistical Shape Model of the Apple from Corresponded Surfaces}, journal = {Chemical Engineering Transactions}, volume = {44}, year = {2015}, pages = {49-54}, address = {Milano, Italy}, abstract = {In this paper, a method for building a 3D statistical shape model of the apple is described. The framework consists of two parts. First, a reference surface is registered to each apple surface, derived from 3D CT scans of apples, of the population to obtain meaningful correspondences between the shapes. In the second part, the corresponded surfaces are used to build a statistical shape model from the population of apples. This model maps out the variability within the population and by adapting the shape model parameters, new, realistic surfaces can be obtained. By parameterizing the surface, an apple can be described with a compact set of basis functions, which has applications in surface fitting description, recognition, or meshing, e.g. for storage simulation. The constructed apple shape model is tested on performance and has proven to be a good representation of the population and can be used in many applications.}, doi = { DOI:10.3303/CET1544009}, author = {Femke Danckaers and Toon Huysmans and Mattias Van Dael and Pieter Verboven and Bart Nicolai and Jan Sijbers} } @inproceedings {1621, title = {Evaluation of 3D Body Shape Predictions Based on Features}, booktitle = {6th International Conference on 3D Body Scanning Technologies}, year = {2015}, pages = {258-265}, address = {Lugano, Switserland}, abstract = {The human body comes in many sizes and shapes. For design purposes, it is useful to be able to quickly simulate a virtual mannequin of a customer. A statistical shape model can be used for this purpose, because it describes the main variations of body shape inside the model{\textquoteright}s population. From this model, the specific features of each person in the population are known. Therefore, a mapping between the shape model parameters and specific features can be calculated, which allows adjusting the body shape, in an intuitive way. In this work, we have investigated how accurate a body shape can be predicted based on a set of features and which features are most suitable for this purpose. Height, weight, and hip circumference appeared to be the most suitable features to accurately predict the body shape.}, keywords = {body features, shape prediction}, doi = {10.15221/15.258}, author = {Femke Danckaers and Toon Huysmans and Daniel Lacko and Jan Sijbers} } @article {1517, title = {Evaluation of an anthropometric shape model of the human scalp}, journal = {Applied Ergonomics}, volume = {48}, year = {2015}, pages = {70-85}, doi = {10.1016/j.apergo.2014.11.008}, author = {Daniel Lacko and Toon Huysmans and Paul M Parizel and Guido De Bruyne and Stijn Verwulgen and Marc M. Van Hulle and Jan Sijbers} } @inproceedings {VLEUGELS2015, title = {Physical Evaluation of an Anthropometric Shape Model of the Human Scalp}, booktitle = {Proceedings of the 6th International Conference on 3D Body Scanning Technologies, Lugano, Switzerland, 27-28 October}, year = {2015}, month = {oct}, publisher = {Hometrica Consulting}, organization = {Hometrica Consulting}, doi = {10.15221/15.161}, url = {http://dx.doi.org/10.15221/15.161}, author = {Jochen Vleugels and Daniel Lacko and Guido De Bruyne and Toon Huysmans and Stijn Verwulgen} } @conference {1605, title = {Statistical shape modeling of the incudomalleolar complex using micro-CT and clinical cone-beam CT}, year = {2015}, month = {July}, address = {Aalborg, Denmark}, abstract = {Introduction: A large variation in material properties and geometry exists in the human temporal bone. These variations can affect hearing and middle ear sound transmission. Middle ear computer (finite element, FE) models are successfully used to predict sound transmission and its dependence on material properties. The model geometry, however, is mostly based on data of a single sample. Here we use statistical shape models (SSM) to characterize the natural anatomical variations present in the incudomalleolar (IM) complex of humans. SSM can later be used in FE models to study the effect of geometry on sound transmission, or parameters can be fitted to clinical CT data to obtain a patient-specific computer model. Methods and Materials: In this study we combine data of high resolution micro-CT scans (uCT, 20 um resolution) of 6 human cadaveric temporal bones and clinical cone-beam CT scans (CBCT, 150 um resolution) of 100 patients. First, a dense correspondence between the uCT samples is obtained by pair-wise elasticity modulated registration of a reference sample to each of the remaining samples. A SSM is built from these corresponded scans using principal component analysis (PCA), describing the average shape and the main variations of the middle ear within the uCT population. Next this SSM is fitted to clinical CBCT data by elastic registration with the SSM as shape prior. Results and conclusions: We will obtain an average geometrical model for malleus, incus and IM complex and characterize the deviations present in the patient population. We will do this by reporting natural variation of size and thickness of malleus head, neck and manubrium, the long and short process of the incus and relative angles in the IM complex.}, author = {Joris Soons and Femke Danckaers and Toon Huysmans and Jan Sijbers and Jan W. Casselamn and Joris J. J. Dirckx} } @article {1535, title = {Subcortical volumetric changes across the adult lifespan: subregional thalamic atrophy accounts for age-related sensorimotor performance declines}, journal = {Cortex}, volume = {65}, year = {2015}, pages = {128-138}, doi = { 10.1016/j.cortex.2015.01.003}, author = {L. Serbruyns and Inge Leunissen and Toon Huysmans and K. Cuypers and R. L. Meesen and P. van Ruitenbeek and Jan Sijbers and S. P. Swinnen} } @article {1421, title = {The anatomy of the clavicle: A Three-dimensional Cadaveric Study}, journal = {Clinical anatomy}, volume = {27}, year = {2014}, month = {2013 Oct 21}, pages = {712{\textendash}723}, abstract = {The clavicle has a complex osteologic structure that makes morphological analysis extremely difficult. A three-dimensional study was conducted to examine the anatomical variations and characteristics of the bone. Sixty-eight human cadaver clavicles were dissected, CAT-scanned, and reconstructed. An automated parameterization and correspondence shape analysis system was developed. A new length, designated as centerline (CL) length, was defined and measured. This length represents the true length of the clavicle. The endpoint length was measured as the distance between two endpoints. The width and curvature were measured in the axial (AX) and frontal (FR) plane and defined along the CL. Next gender and side characteristics and variations were examined. The mean CL length was 159.0 {\textpm} 11.0 mm. The mean endpoint length was 149.4 {\textpm} 10.3 mm, which was statistically significantly shorter than the CL. The male clavicle was significantly longer (166.8 {\textpm} 7.3 mm vs. 151.0 {\textpm} 8.2 mm), wider (14.6 {\textpm} 1.5 mm vs. 12.7 {\textpm} 1.3 mm lateral FR plane, 25.9 {\textpm} 4.1 mm vs. 23.5 {\textpm} 3.0 mm lateral AX plane and 24.7 {\textpm} 2.8 mm vs. 22.8 {\textpm} 2.8 mm medial AX plane), and more curved (10.8 {\textpm} 2.8 mm vs. 8.6 {\textpm} 2.3 mm medial and 10.5 {\textpm} 3.3 mm vs. 9.1 {\textpm} 2.5 mm lateral) than the female one. Left clavicles were significant longer (159.8 {\textpm} 10.9 mm vs. 158.0 {\textpm} 11.2 mm) than right clavicles. A novel three-dimensional system was developed, used and tested in order to explore the anatomical variations and characteristics of the human clavicle. This information, together with the automated system, can be applied to future clavicle populations and to the design of fixation plates for clavicle fractures. Clin. Anat., 2013. {\textcopyright} 2013 Wiley Periodicals, Inc.}, issn = {1098-2353}, doi = {10.1002/ca.22288}, author = {Amit Bernat and Toon Huysmans and Francis Van Glabbeek and Jan Sijbers and Gielen, Jan and Van Tongel, Alexander} } @conference {1487, title = {An Anthropometric Shape Model for the Design of Sports Helmets}, year = {2014}, author = {Daniel Lacko and Toon Huysmans and Annelies Claeskens and Stijn Verwulgen and Peter Aerts and Jan Sijbers and Guido De Bruyne} } @inproceedings {1501, title = {Anthropometrics 2.0: Enrichment of Classical Anthropometry through Multidisciplinary Collaboration}, booktitle = {6th International Conference on Engineering \& Product Design Education.}, year = {2014}, author = {Stijn Verwulgen and Daniel Lacko and Guido De Bruyne and Femke Danckaers and Naomi Christis and Jan Sijbers and Toon Huysmans} } @inproceedings {1455, title = {Correspondence Preserving Elastic Surface Registration with Shape Model Prior}, booktitle = {International Conference of Pattern Recognition}, volume = {22}, year = {2014}, pages = {2143-2148}, abstract = {In this paper, we describe a framework for surface registration. The framework consists of a combination of rigid registration, elasticity modulated registration and the use of a shape model prior. The main goal in this paper is to mini- mize the geometric surface registration error while maintain- ing correspondences. Experiments show improved geometric fit, correspondence, and timing compared to the current state of the art. Possible applications of the framework are construction of correspondences for shape models, reconstruction of missing parts, and artifact reduction.}, doi = {10.1109/ICPR.2014.373}, author = {Femke Danckaers and Toon Huysmans and Daniel Lacko and A. Ledda and Stijn Verwulgen and Van Dongen, Stefan and Jan Sijbers} } @article {1488, title = {Evaluation of prominence of straight plates and precontoured clavicle plates using automated plate-to-bone fitting}, journal = {Acta Orthopaedica Belgica}, volume = {80}, year = {2014}, pages = {301-308}, author = {Van Tongel, Alexander and Toon Huysmans and Amit Bernat and Iwein Piepers and Jan Sijbers and Francis Van Glabbeek and Lieven De Wilde} } @inproceedings {1543, title = {GPGPU and MIC in accelerated cluster for remote sensed image processing software}, booktitle = {Conference on Big Data from Space (BiDS), 12-14 November, ESRIN, Frascati, Italy}, year = {2014}, author = {Olivier Melet and Toon Huysmans and Michel Hummel and Pierre-Marie Brunet} } @inproceedings {1485, title = {Influence of Correspondence Method on Statistical Model Based Shape Prediction}, booktitle = {IEEE International Symposium on Biomedical Imaging (ISBI)}, year = {2014}, author = {Christophe Van Dijck and Wirix-Speetjens, Roel and Toon Huysmans and Femke Danckaers and Jan Sijbers and Vander Sloten, Jos} } @conference {1486, title = {Influence of Correspondence Method on Statistical Model Based Shape Prediction}, year = {2014}, author = {Christophe Van Dijck and Wirix-Speetjens, Roel and Toon Huysmans and Femke Danckaers and Jan Sijbers and Vander Sloten, Jos} } @article {1431, title = {Statistical shape modeling and population analysis of the aortic root of TAVI patients}, journal = {Journal of Medical Devices}, volume = {7}, year = {2013}, month = {12/2013}, publisher = {ASME}, edition = {040925 }, abstract = {The new transcatheter technique to implant synthetic aortic valves offers a treatment to patients previously considered untreatable. However the majority of patients suffer from leakage alongside the implant. Using a statistical shape model of the anatomy a correlation was discovered between leakage and the shape of the sinuses of valsalva.}, doi = {10.1115/1.4025904}, url = {http://medicaldevices.asmedigitalcollection.asme.org/article.aspx?articleid=1767192}, author = {Bosmans, Bart and Toon Huysmans and Wirix-Speetjens, Roel and Verschueren, Peter and Jan Sijbers and Bosmans, Johan and Vander Sloten, Jos} } @conference {1365, title = {Statistical shape modelling in support of user-centred BCI headset design}, year = {2012}, author = {Daniel Lacko and Toon Huysmans and Stijn Verwulgen and Paul M Parizel and Marc M. Van Hulle and Jan Sijbers} } @conference {1303, title = {Mediolateral shape and curvature analysis of the clavicle}, year = {2011}, month = {June}, author = {Van Tongel, Alexander and Toon Huysmans and Amit Bernat and Jan Sijbers and Francis Van Glabbeek} } @article {thuysmanjsijbersVerdonk2010, title = {Automatic Construction of Correspondences for Tubular Surfaces}, journal = {IEEE Transactions on Pattern Analysis and Machine Intelligence}, volume = {32}, number = {4}, year = {2010}, pages = {636-651}, author = {Toon Huysmans and Jan Sijbers and B. Verdonk} } @article {1196, title = {Method for Mapping Tubular Surfaces to a Cylinder}, number = {PCT/EP2010/057882}, year = {2010}, month = {01/2015}, edition = {G06T 17/20 (2006.01), A61B 1/00 (2006.01)}, abstract = {The present invention relates to the field of cylindrical surface parameterization such as colon flattening. Methods are provided for parameterizing tubular surfaces onto a cylinder, wherein the length of said cylinder is modified so that parameterization distortion is reduced.}, url = {https://www.google.com/patents/US8933932}, author = {Toon Huysmans and Jan Sijbers} } @conference {BernatthuysmanGlabbeekjsijbersrpinhoGielen2009, title = {Exploring the Clavicle: Morphometric Differences Using a 3D Model}, year = {2009}, month = {February}, address = {Las Vegas,Nevada}, author = {Amit Bernat and Toon Huysmans and Francis Van Glabbeek and Jan Sijbers and R{\^o}mulo Pinho and Jan L Gielen} } @article {1614, title = {Osteologic exploration of the clavicle: a new approach}, journal = {The FASEB Journal}, volume = {23}, year = {2009}, edition = { (1_MeetingAbstracts)}, chapter = {LB9}, abstract = {Introduction Clavicles have a complex osteologic structure which makes a morphometric analysis extremely difficult. Our analysis shows the exact measurements and variations of the clavicle. Materials and Methods 90 clavicles were dissected, CAT scanned and reconstructed. All measurements were automatically performed. The length and curvatures were calculated around the central line and for each cross-section the average, sagittal and axial diameter was calculated. Results The average length is 163{\textpm}11 mm. For the length, there is a 9\% difference between the gender and 1.2\% between the left and right clavicle. Between the genders there is a volume difference of 36\%. The extremities show the biggest diameter, this decrease as approaching to the inflexion point, which is the smallest average diameter. In the axial view the acromial curvature is shorter and more curved than the sternal one. In males, the maximum acromial curvature has a difference of 18\% and the maximum sternal curvature a difference of 4\% compared with the females. In the coronal view there is a concave curvature with a maximum of 6 mm. In females the acromial end bends more posteroinferiorly. Discussion This is the first 3D analysis performed on the clavicle. Females have a smaller clavicle with a shorter and less curved acromial curvature and a posteroinferior bending. The right clavicle is slightly shorter, thicker and more robust.}, author = {Hilde Elisa Bortier and Amit Bernat and Toon Huysmans and Francis Van Glabbeek and Jan Sijbers and R{\^o}mulo Pinho and Gielen, Jan and Guy Hubens} } @mastersthesis {1172, title = {Parameterization and Correspondence for Improved Modeling, Analysis, and Visualization of Tubular Surfaces.}, year = {2009}, school = {University of Antwerp}, type = {PhD thesis}, address = {Antwerp}, author = {Toon Huysmans} } @conference {1382, title = {FASTRA: Fast Tomographic Reconstructions Using an Eight GPU Desktop Super Computer}, year = {2008}, address = {San Jose, California, USA}, author = {S. van der Maar and Kees Joost Batenburg and Toon Huysmans and Jan Sijbers} } @conference {thuysmanBernatrpinhojsijbersGlabbeeckParizelBortier2008, title = {A Framework for Morphometric Analysis of Long Bones: Application to the Human Clavicle}, year = {2008}, month = {March}, author = {Toon Huysmans and Amit Bernat and R{\^o}mulo Pinho and Jan Sijbers and Francis Van Glabbeek and Paul M Parizel and H. Bortier} } @conference {thuysmanBernatGlabbeekjsijbersGielenBortier2008, title = {Left-Right and Gender Analysis of The Human Clavicle, A Problem in Developing an Anatomical Plate?}, year = {2008}, month = {September}, pages = {101}, address = {Brugge, Belgium}, author = {Toon Huysmans and Amit Bernat and Francis Van Glabbeek and Jan Sijbers and Jan L Gielen and H. Bortier} } @inproceedings {BernatthuysmanGlabbeekjsijbersBortierGielen2008, title = {Morphometric Study of the Human Clavicle for the Development of an Anatomical Plate}, booktitle = {54th Annual Meeting of the Orthopaedic Research Society}, year = {2008}, month = {March}, address = {San Francisco, Ca, United States}, author = {Amit Bernat and Toon Huysmans and Francis Van Glabbeek and Jan Sijbers and H. Bortier and Jan L Gielen} } @inproceedings {rpinhothuysmanVosjsijbers2008, title = {Tracheal Stent Prediction Using Statistical Deformable Models of Healthy Tracheas}, booktitle = {Liege Image Days 2008: Medical Imaging}, year = {2008}, month = {March}, author = {R{\^o}mulo Pinho and Toon Huysmans and W. Vos and Jan Sijbers} } @inproceedings {rpinhothuysmanVosjsijbers2008, title = {Tracheal Stent Prediction Using Statistical Deformable Models of Tubular Shapes}, booktitle = {Proceedings of SPIE Medical Imaging}, year = {2008}, month = {February}, publisher = {SPIE}, organization = {SPIE}, address = {San Diego, CA, USA}, doi = {http://dx.doi.org/10.1117/12.770237}, author = {R{\^o}mulo Pinho and Toon Huysmans and W. Vos and Jan Sijbers} } @article {zmaithuysmanjsijbers2007, title = {Colon Visualization Using Cylindrical Parameterization}, journal = {Lecture Notes in Computer Science}, volume = {4678}, year = {2007}, pages = {607-615}, author = {Zhenhua Mai and Toon Huysmans and Jan Sijbers} } @inproceedings {rpinhojsijbersthuysman2007, title = {Segmentation of The Human Trachea Using Deformable Statistical Models of Tubular Shapes}, booktitle = {Proceedings of Advanced Concepts for Intelligent Vision Systems}, series = {Lecture Notes in Computer Science}, volume = {4678}, year = {2007}, month = {August}, pages = {531-542}, doi = {http://dx.doi.org/10.1007/978-3-540-74607-2_48}, author = {R{\^o}mulo Pinho and Jan Sijbers and Toon Huysmans} } @inproceedings {CampthuysmanmverhoyeGaljartjsijbersavdlinde2007, title = {Statistical shape analysis on 3D MRI of the ventricular system of the Cyln2/Rsn double knock-out mice}, booktitle = {Proceedings of the International Society for Magnetic Resonance in Medicine}, year = {2007}, pages = {1869}, address = {Berlin, Germany}, author = {N. Van Camp and Toon Huysmans and Marleen Verhoye and N. Galjart and Jan Sijbers and Annemie Van Der Linden} } @inproceedings {Meirthuysmanjsijbersavdlinde2007, title = {Statistical shape and position analysis on 3D structural MRI data of a motor region involved in vocal behavior of songbirds}, booktitle = {Proceedings of the International Society for Magnetic Resonance in Medicine}, year = {2007}, pages = {431}, address = {Berlin, Germany}, author = {V. Van Meir and Toon Huysmans and Jan Sijbers and Annemie Van Der Linden} } @article {thuysmanjsijbersVanpouckeVerdonk2006, title = {Improved Shape Modeling of Tubular Objects Using Cylindrical Parameterization}, journal = {Lecture Notes in Computer Science}, volume = {4091}, year = {2006}, pages = {84-91}, author = {Toon Huysmans and Jan Sijbers and F. Vanpoucke and B. Verdonk} } @inproceedings {BertelsthuysmanjsijbersVerdonkParizel2006, title = {Multi-scale registration of spherical parametrizations of the human cortex}, booktitle = {23rd Annual Scientific Meeting of the European Society for Magnetic Resonance in Medicine and Biology}, year = {2006}, pages = {89}, address = {Warsaw, Poland}, author = {J. Bertels and Toon Huysmans and Jan Sijbers and B. Verdonk and Paul M Parizel} } @inproceedings {thuysmanBernatjsijbersParizelGlabbeekVerdonk2006, title = {Shape Analysis of the Human Clavicle for the Development of a Set of osteosynthesis Plates}, booktitle = {Belgian Day on Biomedical Engineering - IEEE/EMBS Benelux Symposium}, year = {2006}, month = {December}, pages = {128-129}, address = {Brussels, Belgium}, author = {Toon Huysmans and Amit Bernat and Jan Sijbers and Paul M Parizel and Francis Van Glabbeek and B. Verdonk} } @inproceedings {thuysmanjsijbersVerdonk2006, title = {Statistical shape models for tubular objects}, booktitle = {Proceedings of IEEE BENELUX/DSP Valley Signal Processing Symposium (SPS-DARTS)}, year = {2006}, month = {March}, pages = {155-158}, address = {Antwerp, Belgium}, author = {Toon Huysmans and Jan Sijbers and B. Verdonk} } @article {thuysmanjsijbersVerdonk2005, title = {Parameterization of tubular surfaces on the cylinder}, journal = {Journal of the Winter School of Computer Graphics}, volume = {13}, number = {3}, year = {2005}, pages = {97-104}, author = {Toon Huysmans and Jan Sijbers and B. Verdonk} } @inproceedings {thuysmanjsijbers2004, title = {Mesh smoothing through multiscale anisotropic diffusion of geometry images}, booktitle = {13th European Microscopy Congress (EMC)}, year = {2004}, month = {August}, address = {Antwerp, Belgium}, author = {Toon Huysmans and Jan Sijbers} }