原理
实现
参考
python+opencv实现显示摄像头,截取相关图片,录取相关视频https://blog.csdn.net/weixin_51883798/article/details/132030733
python图像质量检测(一):黑屏检测
https://blog.csdn.net/qq_40790959/article/details/106107311
python识别视频黑屏或者低清晰度
https://cloud.tencent.com/developer/article/1731677