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2015-10-19 17:29:25 -0500 commented question Perspective transformation between 3D points

If anyone knows the answer, would appreciate for sharing.

2015-10-19 17:28:01 -0500 commented question Perspective transformation between 3D points

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

2015-10-19 17:21:38 -0500 received badge  Enthusiast
2015-10-18 19:41:01 -0500 asked a question Perspective transformation between 3D points

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

2015-09-04 10:26:46 -0500 asked a question What is the origin of the world coordinates after stereo rectification?

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!

2015-09-04 09:27:44 -0500 commented question Getting real 3D points from disparity map

no one knows? :(

2015-09-03 01:33:45 -0500 asked a question Getting real 3D points from disparity map

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

2015-08-31 23:43:03 -0500 asked a question Coordinates in "reprojectImageTo3D"

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