How to represent RGB color information using matlab?

I want to hold the RGB color information of colored images using matlab; so as i can distinctly differentiate different objects using color information?

Very Thanks.

Answer 1

[Michael Haderlein]

Images are represented by (m x n x 3) arrays. This is basically three two-dimensional arrays behind each other. The first layer is R, the second is G and the third is B. Means, if you want to get the three layers separated:

img=imread('myimage.png');
R=img(:,:,1);
G=img(:,:,2);
B=img(:,:,3);

[Minale Habtemichael]

Yes Michael v.v. tnx sir, But what i want is , representing this color information using tensor so as to use/apply on it different tensor operation.

Very Thanks;

[Image Analyst]

Why a tensor? What's wrong with a 3D array like the rest of the world? What form do you even use tensors in in MATLAB? If not arrays, then what? Structures, tables, cell arrays, what????

[Minale Habtemichael]

Very Thanks for your comment, You know sir i read one paper "http://lear.inrialpes.fr/people/vandeweijer/papers/cic04.pdf" which is found on this URI, it is very important for my thesis since it can help me to hold color information with out converting to gray scale; but i am unable to implement it,using matlab this is the rational behind. Very thanks.