Image processing color percentage

Hi, everybody, I have a question about image processing, how should I know the color percentage in a picture? I mean is not the percentage of the Red, Green and Blue. For example, I have a picture which is 100% white in the left and 100% red in the right and there is some mix part in the middle, I want to know the percentage of red and white in the middle. Thanks a lot.<<>>

Answer 1

[Image Analyst]

You have to define where white and red stop and the mixture begins. For example, RGB = (255,255,255) is definitely white. But is (255, 254, 254) white or is it a mixture?

As an example, what if a pixel is (150, 100, 120). Can you tell us what percentage of red, or of white, you would consider that?

Maybe you want to convert to HSV color space and look at the S channel. Define what saturation you think the mixture covers and get the mean within that region. Posting/uploading a picture always helps.