A unified, hand-crafted algorithm uses optical flow and normalized cross correlation to do shot boundary detection, sampling structure detection and dynamic keyframe extraction in one pass.
A Study on Keyframe Extraction Methods for Video Summary
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Faster than real-time detection of shot boundaries, sampling structure and dynamic keyframes in video
A unified, hand-crafted algorithm uses optical flow and normalized cross correlation to do shot boundary detection, sampling structure detection and dynamic keyframe extraction in one pass.