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.de/patents/US6496228?utm_source=gb-gplus-sharePatent US6496228 - Significant scene detection and frame filtering for a visual indexing system using dynamic thresholds
