how implement DCT stegnography

how implement DCT stegnography

[Fady Samann]

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