Byoung-Ki Jeon Yun-Beom Jung Ki-Sang Hong Image Segmentation by Unsupervised Sparse Clustering. 2-7 2005 conf/wacv/2005 WACV/MOTION http://doi.ieeecomputersociety.org/10.1109/ACVMOT.2005.60 db/conf/wacv/wacv2005.html#JeonJH05