Image Processing using Least Significant bit

How can i check and edit the binary value of a pixel in RGB image. Do i need to convert it to Grey first. Can someone tell me with code.

Answer 1

[Walter Roberson]

Provided that the image is uint8 or uint16 or int16, but not double:

Lsb = mod(TheImage, 2);

Now for any given row R and column C

Lsb(R, C, :)

will be the least significant bit of each of the bit planes.

TheImage - Lsb + NewLsb

would then set the least significant bit to be NewLsb

There are times when it makes sense to convert to grayscale before looking at Lsb, but there are other times when it should be left as rgb. In particular if you are doing watermark work then you need to keep the cover as rgb.