background subtraction in video or image
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mary khaliji
le 1 Juin 2015
Réponse apportée : RAJASHEKHARA REDDY
le 13 Jan 2017
I want to background subtraction from video or image and I don't have any background image without foreground objects. Can any body give me code for that? I attached a sample of images.
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Dima Lisin
le 1 Juin 2015
You can use vision.ForegroundDetector object in the Computer Vision System Toolbox.
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Image Analyst
le 4 Juin 2015
You can't expect Dima to drop everything and develop a turnkey application for you. You can hire other people at the Mathworks (consultants) to do that but it won't be instant.
You will have to first find the objects that you want to outline. That means segment the image and get a binary image. Then you can call bwperim() or bwboundaries(). bwperim() gives you a binary image whereas bwboundaries() gives you the x,y coordinates of the outline pixels.
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Image Analyst
le 1 Juin 2015
Then you'll have to estimate it. For example, find the foreground objects somehow and then estimate the background by using roifill() to fill in where the foreground objects are. But if you can do that, then maybe you don't even need to subtract the background. Why don't you attach a couple of frames from your video and tell us what you want and don't want?
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Image Analyst
le 1 Juin 2015
You have to first find the foreground objects so you have a binary image of the foreground, then you can fill them in. I suggest you follow up on Dima's answer as that is the best way.
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