MATLAB: How to check the image whether it is two-dimensional or three-dimensional programmatically

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I have a variety of images that I try to treat with a single matlab program, and these pictures are some of three dimensions and some are two dimensions. In order to read all the images and process them in my program, I must specify a specific treatment for images with two dimensions in order to implement the program on all types. So I first need to check the images if they are two-dimensional so that I can then convert them to three dimensions like the rest of the pictures I have. I hope there is a programmatic way to the problem.

Best Answer

 doc ndim % if ndims() == 3 or 2

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MATLAB: How can i check if an image is RGB or grayscale or binary

You can convert to grayscale using a combination of all color channels:

grayImage = rgb2gray(rgbImage);

Or you can extract one of the color channels:

% Extract the individual red, green, and blue color channels.
redChannel = rgbImage(:, :, 1);
greenChannel = rgbImage(:, :, 2);
blueChannel = rgbImage(:, :, 3);

You can get the size (dimensions) like this:

[rows columns numberOfColorChannels] = size(yourImageArray);

MATLAB: Is it possible to view a three-dimensional variable in a grid with guide numbers (as with two-dimensional arrays)

You take out the array you want and see.

A = rand(100,100,100) ;    % you cannot see here margin numbers 
T = A(:,:,7) ;             % Now T is 2D you can see margins here.

Still, I am wondering..why you want margin numbers. :|

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Related Solutions

MATLAB: How can i check if an image is RGB or grayscale or binary

MATLAB: Is it possible to view a three-dimensional variable in a grid with guide numbers (as with two-dimensional arrays)

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