Assigning color to gray image

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I have a gray image (it's a flame) like the image below and I want to get something like the next image. I think I need to apply color and contour maps. But I don't know how to apply them. Thank you.

采纳的回答

Image Analyst
Image Analyst 2014-4-21
I'd just use colormap and not mess with contours unless you know what you're doing and what you want. To pseudocolor a grayscale image an leave it as grayscale but display it as colored:
imshow(grayImage);
colormap(jet(256));
colorbar;
To convert a grayscale image into a true color RGB image and display the RGB image instead of the pseudocolored image:
rgbImage = ind2rgb(grayImage, jet(256));
imshow(rgbImage);
You don't use color bars with RGB images.

更多回答(1 个)

Walter Roberson
Walter Roberson 2014-4-21
contourf(YourImageMatrix);
colormap(hot)

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