Oleg_k's profile - activity

If anyone knows the answer, would appreciate for sharing.

I don't think rigid transformation is enough, the 2 cameras are different.

Hello, I need to find a transformation from one camera to another (stereo), so i think i need a perspective transformation in 3D. Am i right? How can i find such transformation? Thanks a lot, Oleg

How can i set where is the origin point after stereo rectification and disparity map, and what are the X-Y-Z axes? Thanks a lot!

no one knows? :(

Hi, I need to get the real 3D points from the disparity map i got (after stereo calibrating and rectifying). I tried to use reprojectImageTo3D, but the coordinates i get don't make sense, even the sign of them (positive/negative). Are the points i get from the function are real coordinates in the world coordinate system i use (a chess board is attached to the photo so the coordinate system i use is according to it). This is the code i used after calculating the disparity map:

disp.convertTo(disp, CV_32F, 1.0 / 16.0); Mat xyz; reprojectImageTo3D(disp, xyz, Q, true);

Thanks, Oleg

Hi. I want to ask about the result coordinates of the function, especially about the Z-coordinate. Is it a coordinate in the world coordinate system (like the objectPoints the function gets), or is it the depth, the distance from the camera? Thanks, Oleg