extract the difference betwwen 2 images
2 views (last 30 days)
Show older comments
samer mahmoud
on 6 Dec 2015
Commented: Walter Roberson
on 7 Dec 2015
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/152498/image.png)
Hello, i want the difference between 2 image and get this difference this picture show what i want
3 Comments
Image Analyst
on 6 Dec 2015
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
on 6 Dec 2015
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?
Accepted Answer
Dima Lisin
on 7 Dec 2015
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.
4 Comments
Walter Roberson
on 7 Dec 2015
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.
More Answers (0)
See Also
Categories
Find more on Computer Vision with Simulink in Help Center and File Exchange
Products
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!