MATLAB: How can i convert from rgb to hsi color space

Image Processing Toolboxobject detectionrgb to hsi color space conversion

I'm trying to segment my object using HSI color space. i couldn't find a matlab function in it's toolbox.

Best Answer

Just use rgb2hsv(). You should be able to get what you want by using that. Otherwise, just use the formulas.

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MATLAB: How to convert a rgb image to CLElab color space

I've never heard of CLElab and a quick search doesn't find anything related to colour spaces, so I think you can safely assume that you're looking for CIE Lab, which is commonly just called Lab (or L*a*b*).

So, yes, rgb2lab is the correct function.

Normally you convert to a colour space because it has the properties you need so you should know whether L*a*b* is the actual colour space you want.

Note that RGB is device dependent while L*a*b* isn't, so conversion may not be just as simple as just calling rgb2lab.

MATLAB: How to convert False color Images to Black & White

I can't see the image. If you use rgb2gray() you probably won't get anything that makes sense. You really need to have the color map that was used to pseudocolor the image. If you have that you can recover the original gray scale image using

grayImage = rgb2ind(rgbImage, colorMap);

Then you can threshold that grayscale image to get a binary image. By the way, your image link is broken.

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MATLAB: How to convert a rgb image to CLElab color space

MATLAB: How to convert False color Images to Black & White

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