Disparity value difference in Stereo SGBM vs. WLS disparity maps
Anyone who might have an idea please?
I have been working on a stereo imaging project for a few months now. The goal is to track a defined object, compute its position (by using triangulation with stereo camera) and its orientation (by using an IMU). I get really good results, but there is something I don't understand and it's bothering me : the minimum depth in the disparity map obtained after using the WLS filter function available in OpenCV is not the same as the minimum depth in the disparity map obtained with the stereo SGBM algorithm. Why ?