Indexing and Matching of Video Shots Based on Motion and Color Analysis

This paper concerns two fundamental issues in video shots retrieval: key frame identification and similarity measurement between the key frames. We propose a simple key frame extraction algorithm based on optical flow. The algorithm emphasizes the motion extremum in the shot. Color histograms in HSV color space are adopted to describe the content of the extracted key frames and a new model is proposed to measure the similarity between the key frames from different shots. Preliminary experiments have shown that the proposed method outperforms existing ones in retrieving sport video shots