Can anyone give me some advice on how i can look at pixel data in an image to obtain information that can be used to find similar images. I had hoped to split the image in to a number of parts and then count the number of red green and blue pixels. However i assumed that each pixel was red green or blue and i could keep a count of the number of these, this is not the case, as far as i know now, each pixel is a mixture of red green and blue. I was then going to use these counts to look at different parts of images to see if their rgb counts were similar. Any ideas on how i can tackle this problem will be greatly appreciated.