MATLAB: RGB images 3 dimensional?

digital image processingimage processingImage Processing ToolboxMATLAB

What is the dimension size of RGB image matrix? Are they three dimensional or two dimensional?

Best Answer

RGB image will be a 3D matrix.....it will be of size m*n*3. It has three color channels. You can seperate them using:

I = imread("MyColorImage") ; 
[m,n,p] = size(I) ;    % note p = 3 
R = I(:,:,1) ;   % Red
G = I(:,:,2) ;   % Green 
B = I(:,:,3) ;   % Blue

Related Solutions

MATLAB: What does this do r = img1(:,:,1); % red channel g = img1(:,:,2); % green b = img1(:,:,3);

That is taking an RGB image, img1, and extracting the red, green, and blue parts and creating 3 2-D matrices: r,g, and b.

An RGB image, sometimes referred to as a truecolor image, is stored in MATLAB as an M-by-N-by-3 data array that defines red, green, and blue color components for each individual pixel. RGB images do not use a palette. The color of each pixel is determined by the combination of the red, green, and blue intensities stored in each color plane at the pixel's location.

MATLAB: How i can extract green colour from an image??

I = imread(image) ;
R = I(:,:,1) ;
G = I(:,:,2) ;
B = I(:,:,3) ;

Best Answer

Related Solutions

MATLAB: What does this do r = img1(:,:,1); % red channel g = img1(:,:,2); % green b = img1(:,:,3);

MATLAB: How i can extract green colour from an image??

Related Question