2015-08-06 07:32:38 -0500 asked a question Image rectifying using homography matrix Hello! I'd like to transform an image using homography matrix. That is, when I have an image taken at a certain position and attitude, I want to get an image taken at a different position and attitude. It is like a rectification, but I want to use homography matrix (which is obtained from information of translation and rotation) as the transform. I have no idea of right OpenCV function to do that. I tried warpPerspective(), but it produces awkward result. (1kb image) Could you advise me to solve the problem? My code goes like Mat src = imread("tests/image3.jp2", IMREAD_COLOR); Mat dst, M; float H33[3][3]; // //...calculate homography matrix H33 // M = Mat(3, 3, CV_32F, H33); warpPerspective(src, dst, M, Size(sideLength, sideLength)); imwrite("tests/image3_warp.jp2", dst);