How to get 3D dimensions for an object by using two images taken from different cameras

Dear all; I would like to ask you how I can get 3D dimensions for an object by using two images taken from different cameras, I know the 2D dimension for the object in each image, but I don't know how to fuse information from two image to get X,Y,Z dimensions for the object. Regards

Answer 1

[Image Analyst]

http://www.mathworks.com/products/computer-vision/features.html#stereo-vision

Stereo Vision
Stereo vision is the process of extracting the 3D structure of a scene from multiple 2D views.

Computer Vision System Toolbox provides functions and algorithms
to complete the following steps in the stereo vision workflow:

      Stereo calibration
      Stereo image rectification
      Disparity map computation
      3D scene reconstruction

Stereo Calibration

Stereo calibration is the process of...................