Depth map from disparity

1. How do you find the depth of a disparity map?
2. Is a disparity map the same as a depth map?
3. What is disparity in depth estimation?
4. How do you make a disparity map?

How do you find the depth of a disparity map?

x = xl*z/f or b + xr*z/f y = yl*z/f or yr*z/f This method of determining depth from disparity d is called triangulation.

Is a disparity map the same as a depth map?

Disparity is the horizontal displacement of a point's projections between the left and the right image. Whereas, depth refers to the z coordinate (usually z) of a point located in the real 3D world (x, y, z).

What is disparity in depth estimation?

Stereo matching or disparity estimation is the process of finding the pixels in the multiscopic views that correspond to the same 3D point in the scene. The rectified epipolar geometry simplifies this process of finding correspondences on the same epipolar line.

How do you make a disparity map?

Given a pair of stereo images, to compute the disparity map, we first match every pixel in the left image with its corresponding pixel in the right image. Then we compute the distance for each pair of matching pixels. Finally, the disparity map is obtained by representing such distance values as an intensity image.