計算梯度幅值與方向

Mat magX = Mat(src.rows, src.cols, CV_32F); Mat magY = Mat(src.rows, src.cols, CV_32F); Sobel(image, magX, CV_32F, 1, 0, 3); Sobel(image, magY, CV_32F, 0, 1, 3); // 計算斜率 Mat slopes = Mat(image.rows,

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