Can anyone please help me to calculate average(mean) RGB value from the image in matlab? and also show the image using that average values.....

I=imread(filename);

red=I(:,:,1);

green=I(:,:,2);

blue=I(:,:,3);

Ravg=(sum(sum(red)))./((size(red,1)).*(size(red,2)));

Gavg=(sum(sum(green)))./((size(green,1)).*(size(green,2)));

Bavg=(sum(sum(blue)))./((size(blue,1)).*(size(blue,2)));

[Rik]

This code looks like it already calculates the averages. What is your question?

[Sajina Rose]

I want to calculate average RGB value and also enhance the image by using that average values.........

Answer 1

[Image Analyst]

What does "enhance" mean to you? Increase the saturation? If so, convert to HSV space with rgb2hsv() and multiply the second channel, the "S" channel, by some factor. See attached demo where I do that for the blue colored things.

Regarding your code, you could do it much simpler by

Ravg = mean2(red);
Gavg = mean2(green);
Bavg = mean2(blue);