@inproceedings {pscheundHoveslivens1996, title = {On the local optimality of image quantizers}, booktitle = {Proc. ICPR{\textquoteright}96 IEEE Internat. Conference on Pattern Recognition,, D, pp. 664-668, Vienna, august 25-30}, year = {1996}, pages = {664-668}, author = {Paul Scheunders and H. Van Hove and S. Livens} }