Grayimage back to green

Hello, how can I convert this grayimage back to an rgb with green fluorescence?

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Answer 1

[Image Analyst]

blackImage = zeros(size(grayImage), 'uint8');
rgbImage = cat(3, blackImage, grayImage, blackImage);

Or you can use ind2rgb():

cmap = [zeros(256,1), (0:255)', zeros(256,1)]
rgbImage = uint8(ind2rgb(grayImage, cmap));

[Jane]

thanks!