Jenq-Neng Hwang Jeongnam Youn S. Deshpande Ming-Ting Sun Video Browsing for Course-on-Demand in Distance Learning. 530-533 1997 ICIP (2) http://computer.org/proceedings/icip/8183/volume2/81830530abs.htm db/conf/icip/icip1997-2.html#HwangYDS97