double minVal = 0.0; double maxVal = 0.0; minMaxLoc(img, &minVal, &maxVal); cout << minVal << ", " << maxVal << endl; 1. 2. 3. 4. 5. 第二种方法: Mat img = imread("./1.jpg", 0); vector<uchar>pixels; for (int i = 0; i < img.rows; i++) { uchar* data = img...