Caitlin Jordan:
So you calculate the mean red, green, and blue. Is there anything wrong with that? Does it meed your needs or not? If not, tell us what you want to do. What you want TO DO, not how you think you need to get there (like getting the mean r, g, and b). Why don't you go over to Answers http://www.mathworks.com/matlabcentral/answers/ and attach your image and tell me what you want to measure in it.
-Image Analyst
So you calculate the mean red, green, and blue. Is there anything wrong with that? Does it meed your needs or not? If not, tell us what you want to do. What you want TO DO, not how you think you need to get there (like getting the mean r, g, and b). Why don't you go over to Answers http://www.mathworks.com/matlabcentral/answers/ and attach your image and tell me what you want to measure in it.
-Image Analyst