How i can read Red channel in 3 RGB Image

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Abduellah Elbakoush
Abduellah Elbakoush on 1 Jan 2022
Edited: DGM on 1 Jan 2022
I have RGB Image and I work in Image steganography
I want to read Juct Red channel ,I want to make the 2LSB in Red channel as Indicator
How I Can do that

Accepted Answer

DGM
DGM on 1 Jan 2022
Edited: DGM on 1 Jan 2022
This is how you can get the red channel
% an RGB image
rgbpict = imread('peppers.png');
% just the red channel
R = rgbpict(:,:,1);
Or you can use imsplit if you also want the others
[R G B] = imsplit(rgbpict);
To get get specific bits, you can use bitget() or basic tools like mod() or rem().

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