A video indexing system analyzes contents of source video and develops a visual table of contents using selected images. A system for detecting significant scenes detects video cuts from one scene to another, and static scenes based on DCT coefficients and macroblocks. A keyframe filtering process filters...http://www.google.com.tw/patents/US7110047?utm_source=gb-gplus-share專利 US7110047 - Significant scene detection and frame filtering for a visual indexing system using dynamic thresholds
