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Which Dct Algorithm is used ?

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marie lasz
marie lasz 2019 年 12 月 9 日
Commented: marie lasz 2019 年 12 月 10 日
Hello,
Can anyone tell me that which algo is used in this dct watermarking code or anyone who already used that code? Here is the link
Thanks in advance!

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Walter Roberson
Walter Roberson 2019 年 12 月 9 日
dct2 does dct(), transposes the array, and does dct() again.
dct() that is invoked is a private function, not the public dct from the signal processing toolbox. However, the two use the same internal structure; fft() and multiply by weights.

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marie lasz
marie lasz 2019 年 12 月 10 日
Thanks for your response and I know that watermarking is performed here in dct domain but I don't know the complete algorithm? Or which research paper is followed?

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