how to convert a grayscale image to rgb image
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how to covert a grayscale image to rgb image
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Walter Roberson
am 18 Apr. 2012
cat(3, YourImage, YourImage, YourImage)
The result will be a truecolor image that happens to only use gray tones.
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Walter Roberson
am 22 Aug. 2012
Verschoben: DGM
am 29 Dez. 2023
For example:
YourImage = rgb2gray( imread('lena.tif') );
newImage = cat(3, YourImage, YourImage, YourImage);
Image Analyst
am 22 Aug. 2012
This should also work:
rgbImage = ind2rgb(grayImage, gray(256));
though I usually use the cat() method given by Walter.
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Walter Roberson
am 23 Aug. 2012
The cat() method will work when the grayscale image is class single or double, or uint8 or uint16, but ind2rgb() requires uint8 or uint16.
DGM
am 29 Dez. 2023
This answer covers multiple ways, depending on what your expected results are:
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