how implement DCT stegnography

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amal 2014-9-21

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评论： Fady Samann 2020-6-13

how implement DCT stegnography

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Fady Samann 2020-6-13

The process is just like JPG compression but in the middle of quantization and dequantization, you replace the LSB of the DCT coefficient of the low frequancies with the message's bits.

https://www.mathworks.com/matlabcentral/answers/217004-need-help-on-my-dct-and-quantization-code-for-image-compression

https://en.wikipedia.org/wiki/Quantization_(image_processing)#Quantization_matrices

https://www.mathworks.com/matlabcentral/answers/27380-stegnaography-using-dct

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