OpenCV 读取摄像头画面卡顿问题

//画面若是分辨率比较高，须要将帧图片进行压缩后再进行识别 resize(gray, graysmall, Size(gray.cols / 3, gray.rows / 3)); cascade.detectMultiScale(graysmall, rects, 1.1, 3, 0 | CASCADE_SCALE_IMAGE , Size(30,30)); for (auto it =

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