homography

Opencv virtually camera rotating/translating for bird’s eye view

by

That is the code i would advise (it’s one of mine), to my mind it answers a lot of your questions, If you want the distance, i would precise that it is in the Z matrix, the (4,3) coefficient. Hope it will help you… Mat source=imread(“Whatyouwant.jpg”); int alpha_=90., beta_=90., gamma_=90.; int f_ = 500, dist_ … Read more

Computing camera pose with homography matrix based on 4 coplanar points

by

If you have your Homography, you can calculate the camera pose with something like this: void cameraPoseFromHomography(const Mat& H, Mat& pose) { pose = Mat::eye(3, 4, CV_32FC1); // 3×4 matrix, the camera pose float norm1 = (float)norm(H.col(0)); float norm2 = (float)norm(H.col(1)); float tnorm = (norm1 + norm2) / 2.0f; // Normalization value Mat p1 = … Read more