@inproceedings{Sun02-139 author = {X. Sun and B. S. Manjunath and and A. Divakaran}, title = {Representation of motion activity in hierarchical levels for video indexing and filtering}, booktitle = {IEEE International Conference on Image Processing (ICIP)}, location = {Rochester, NY, USA}, volume = {1}, pages = {149--152}, month = {Sep}, year = {2002}, url = {https://vision.ece.ucsb.edu/sites/default/files/publications/02ICIPxdsun1.pdf}, }