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Speech encryption is becoming increasingly important as the increasing relevance of multimedia applications such as video conference and news broadcasting. However, multimedia encryption and decryption are often computationally demanding and unpractical for power-constrained devices and narrow bandwidth environments. To tackle this situation, two novel selective encryption schemes are presented for...
A novel steganographic method based on non-uniform generalized LSB is proposed. Different from the traditional distortion measure MSE and PSNR, the structural-similarity based image quality assessment is used to measure the distortion caused by the data hiding. With the given maximum allowable distortion, dynamic programming is performed to find the optimum substitution depth vector to achieve the...
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