Sae Hwang Bag-of-Visual-Words Approach to Abnormal Image Detection in Wireless Capsule Endoscopy Videos. 320-327 2011 ISVC (2) http://dx.doi.org/10.1007/978-3-642-24031-7_32 conf/isvc/2011-2 db/conf/isvc/isvc2011-2.html#Hwang11