part color part black and white
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I have a grayscale image. I want to change some pixels to colored pixels. How do I do that? thanks
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Walter Roberson
2016-10-25
You need to convert the grayscale to equivalent (gray-toned) RGB image, after which you can add color to the image.
newRGBimage = YourGrayImage(:,:,[1 1 1]); %a fast way of copying the image to three color planes
newRGBimage(:,[1 end], 1) = 255; %draw a red left and right border
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Walter Roberson
2016-10-25
Small correction:
newRGBimage(:,[1 end], 1) = 255; %draw a red left and right border
newRGBimage(:,[1 end], 2:3) = 0;
If your image is double instead of uint8 then change the 255 to 1.0
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