CODEWITHSUNDEEP
matlabrgbinfrared
Pedro Marques
Pedro Marques

Reputation: 175

Calculate CIR with multibandread Matlab

I'm trying to calculate the CIR(standard color-infrared) of an Image using the function multibandread but give me an error. I'm trying this tutorial of mathworks: Mathworks

The image is 500x500x3 uint8. This is my code:

G = imread ('nir.tif');
if size(G,3) == 4  %alpha
G = G(:,:,1:3);  %strip alpha
end
CIR = multibandread(G, [500, 500, 4], 'uint8=>uint8',...
                128, 'bil', 'ieee-le', {'Band','Direct',[4 3 2]});
figure
imshow(CIR);

This is the error: Index exceeds matrix dimensions.

Upvotes: 1

Views: 261

Answers (1)

Oguzhan Ozel
Oguzhan Ozel

Reputation: 1164

You did not mention in which line the error occurs but it seems like there is a problem about size parameter of multibandread function.

First, you have limited number of bands of the image to 3, then tried to read 4 bands from image.

Your problem may be solved with following change:

CIR = multibandread(G, [500, 500, 3], 'uint8=>uint8',...
                128, 'bil', 'ieee-le', {'Band','Direct',[3 2 1]});

Moreover, the first parameter of multibandread, filename, should be in string, not a matrix.

Upvotes: 1

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