Steganalysis method for audio spread-spectrum steganography
A steganalysis and steganography technology, which is applied in the field of steganalysis for audio spread spectrum steganography, can solve problems such as unsatisfactory accuracy
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[0041] The present invention will be further described below with specific embodiments in combination with the drawings:
[0042] The main idea of the steganalysis method for audio frequency spread spectrum steganography provided by the present invention is: the main idea is that after repeated steganography, the signal distortion caused by the first embedding is the largest, and then it is reduced accordingly. The statistical distortion distance between two adjacent signals will become smaller and smaller. Investigate the noise distribution of wavelet subbands in the wavelet domain, then select an appropriate probability model to model it, calculate the effective distance measurement as the characteristic value, and finally use the support vector machine to construct the steganalysis algorithm.
[0043] The implementation of the algorithm adopts the idea of pattern recognition. In the training stage: first extract feature values from clean samples and their corresponding ste...
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