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JPEG Steganography extraction of message

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Budoor Salem
Budoor Salem 2017-5-11
关闭： John D'Errico 2017-5-11
in JPEG Steganography when we do steganography (the embedding )using the LSB of the quantized DCT Coefficients to embed message bits ..after that doing the Huffman and its reverse operation, then dequantization and the inverse DCT so that I can have a stego image
now my question is here
after having a stego photo and I want to extract the message bits should I do the previous steps again on the stego photo?? like DCT and quantization again with the same quality factor used in embedding..then I extract the message bits from theLSB?? is this the correct path??
I am just worried that doing the quantization step on the stego photo will affect my message bits ..like losing or modifying it
would you please advise me on this it will really help thank you so much

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