sgbm算法 C++

sgbm算法是一种立体匹配算法，用于计算两幅图像之间的视差图。在C++中，可以使用OpenCV库中的StereoSGBM类来实现该算法。下面是一个简单的示例代码：

#include <opencv2/opencv.hpp>

using namespace cv;

int main()
{
    Mat img1 = imread("left.png", IMREAD_GRAYSCALE);
    Mat img2 = imread("right.png", IMREAD_GRAYSCALE);

    StereoSGBM sgbm;
    sgbm.minDisparity = 0;
    sgbm.numDisparities = 64;
    sgbm.blockSize = 11;
    sgbm.P1 = 8 * img1.channels() * sgbm.blockSize * sgbm.blockSize;
    sgbm.P2 = 32 * img1.channels() * sgbm.blockSize * sgbm.blockSize;
    sgbm.uniquenessRatio = 10;
    sgbm.speckleWindowSize = 100;
    sgbm.speckleRange = 32;
    sgbm.disp12MaxDiff = 1;

    Mat disp;
    sgbm(img1, img2, disp);

    imshow("disparity", disp);
    waitKey(0);

    return 0;
}