extracted features

hi sir, can I know in Matlab to extract feature of pixels, we need to set the pixel either in RGB,grayscale or binary pixels, isn't it? can u grive brief explanation on why we choose on these[either rgb,binary or grayscale] pixels? pls advice.many thanks

[Walter Roberson]

You could also convert the pixel colors to another color space such as hsv or L*a*b and extract one of those components.

Answer 1

[Image Analyst]

That's the whole art of image processing - deciding exactly what steps to do. You can take a course in it from a university or online, or from the Mathworks, but not from Answers, which is meant for short questions.