Method for extracting key frame of monitoring video of front-end intelligent equipment

The invention discloses a method for extracting key frame of monitoring a video of front-end intelligent equipment, which adopts an improved three-frame difference method, performs target detection based on background difference and inter-frame difference so as to extract key frames, improves the defect of insufficient frame extraction in transformation in dynamic transformation environment application of the traditional shot-based key frame extraction technology. And the problem that a large amount of information of the moving target in the monitoring video is easy to lose is avoided. Meanwhile, the three-frame difference method frame is used for calculating the difference relation of the two adjacent frames by depending on the three adjacent frames of images, the requirement for the relation between the frames is not high, calculation is simple, the requirement for hardware equipment is not high, and the invention is suitable for being used in front-end intelligent equipment. 本发明公开了一种前端智能设备监控视频关键帧提取方法，采用改进型