LSB embedding in YCbCr color space

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Toma Sh
Toma Sh on 12 Nov 2020
Hi,
I have a problem in implementing a paper called "Color image steganography in YCbCr space".
After I convert the RGB image to YCbCr model and using XOR between LSB of Y, one secret bit, and LSB of Cb to replace the LSB of Cr by the result bit for embedding, the extraction is correct in some images but not correct in other images.
I searched about if some components of YCbCr model are undefined in some cases, but I didn't find an answer.
Are some components of YCbCr model are undefined in some cases so that I faced the problem of incorrect extraction?
Please help me.
Thank you.

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