Local motion information-based video retrieval method

In motion content based video retrieval, users are more concerned with the local object motion than the global camera motion. Based on parameters estimated from global motion model, local object motion information are extracted from general video sequences. The extracted local motion vector field is then used to produce a directional histogram, which is taken as the feature of the video retrieval system. Experimental results show that this local motion information retrieval system could effectively find clips that better match people's understanding of the video's motion content.