How can I paint a list of pixels in a matlab image?
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I'm working with a lot of images here and I have to find all the pixels above a scalar value and paint all them into any color.
I've all the indexes of this pixels but I don't know how can I paint them now...
Thx for the help again.
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Jan
2012-1-16
In which format are the "images" represented? Printed on paper, as JPEGs on the harddisk or as arrays in Matlab? What does "paint all of them in any color" exactly mean?
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Image Analyst
2012-1-16
Here's the way to do it without using slow loops:
grayImage = imread('coins.png');
subplot(2,2,1);
imshow(grayImage);
binaryImage = uint8(255 * ~(grayImage > 150));
subplot(2,2,2);
imshow(binaryImage, []);
uniformImage = uint8(255 * ones(size(grayImage)));
zeroImage = uint8(255 * zeros(size(grayImage)));
rgbImage = cat(3, uniformImage, binaryImage, zeroImage);
subplot(2,2,3);
imshow(rgbImage);
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