The code crashes at stereo->compute without any mention of error. Any ideas why ?
Ptr<StereoSGBM> stereo;
int window = 5;
stereo->create(1, 100, 16, 8 * 3 * window*window, 32 * 3 * window*window, 1, 10, 100, 32);
Mat imgL = imread("L.png", CV_LOAD_IMAGE_GRAYSCALE);
Mat imgR = imread("R.png", CV_LOAD_IMAGE_GRAYSCALE);
Mat disp;
stereo->compute(imgL, imgR, disp);
cv::stereo::StereoBinarySGBM::create returns a cv::Ptr. It is a static function and usually for clarity and sanity one calls these not from an object, but with the class. In your case stereo is a nullptr and so you are getting a segfault.
The following is correct:
auto sgbm = cv::stereo::StereoBinarySGBM::create( 0, //mindisp
NDISP_DEFAULT, //numdisp
9, //BlockSize
25, //P1
50, //P2
1, //dispdiffmax
63, //prefiltercap
40, //uniqueness
200, //speckle window size
2, //speckle range
cv::StereoSGBM::MODE_SGBM ) );
cv::Mat imgL = cv::imread("L.png", CV_LOAD_IMAGE_GRAYSCALE);
cv::Mat imgR = cv::imread("R.png", CV_LOAD_IMAGE_GRAYSCALE);
cv::Mat disp;
sgbm->compute(imgL, imgR, disp);
Asked: 2016-08-18 11:57:30 -0600
Seen: 860 times
Last updated: Aug 23 '16