视频关键帧提取。全阈值算法找到每个镜头的关键帧并保存-Video key frame extraction.Using threshold algorithm to find key frames in every scene and save them.

数字视频应用技术，基于opencv的边缘检测与关键帧的提取和保存-Application of digital video technology, extraction and preservation of OpenCV edge detection and key frame based on