extract the difference betwwen 2 images

Hello, i want the difference between 2 image and get this difference this picture show what i want

[Walter Roberson]

It looks to me that you do not just want a simple difference of images: it appears that you want to do a stereo reconstruction.

[Image Analyst]

Yes but there's much more required. For example, why does it get a standing person and not the chair or other things in the room? I suspect this is from a paper so you'd have to follow the directions in the paper rather than ask us.

[Walter Roberson]

Unless this is two examples of obtaining the difference of two images, with there being two constant-background images available that are not shown here?

Answer 1

[Dima Lisin]

What you are looking for is background subtraction. It is not really as simple as taking the difference between the two images. If you have a video taken with a stationary camera, then you can detect moving objects using the vision.ForegroundDetector object from the Computer Vision System Toolbox. See the Motion-based Multiple Object Tracking Example for more information.

[samer mahmoud]

thnx dima but you have any code ?

[Walter Roberson]

Dima linked to a code example.

[samer mahmoud]

walter i want read i video and detect the difference between frames

[Walter Roberson]

That is what that example code does. Look at the example code setupSystemObjects() and see how it uses a vision video file reader to open a video file.

The example code detects the differences between frames and uses them to track moving objects.