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How can I invert a binary image in MATLAB?

Date: 2023-01-06 13:54:59

I have a binary image and need to convert all of the black pixels to white pixels and vice versa. Then I need to save the new image to a file. Is there a way to do this without simply looping over every pixel and flipping its value? 

Answers:

If you have a binary image binImage with just zeroes and ones, there are a number of simple ways to invert it:

 

binImage = ~binImage;
binImage = 1-binImage;
binImage = (binImage == 0);

Then just save the inverted image using the function IMWRITE.


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