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How to change the colour of the backgroud

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Hi, i rotate an image and i want to change the black background to white. Thanks in advance.

Accepted Answer

Laurent
Laurent on 23 Aug 2013
It depends on what type of image you have, but let's say it is a 8-bit grayscale image. In that case you can do the following:
thisim(thisim==0)=255;
where thisim contains your image.
If you would like a more specific answer, please provide us your image.

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