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Information Hiding is a good method to transmit important information secretly. Video sequences usually include many frames, so they have more room to hide information. In the paper, in order to increase the amount of hiding information, we choose MPEG sequences as hosts, and we present a practical method to hide information in MPEG compressed video. Generally, there are many B-frames in each GOP...
In the paper, we present an efficient algorithm to hide information in MPEG compressed video. In order to utilize the large amount of video streams, and to speed up the process of hiding information, we provide an algorithm that makes use of compressed coefficients to hide information directly. The advantage of the method is that we can make use of DCT coefficients directly without compressing and...
To compress image sequence, a coder structure, which combines the standard 3-D wavelet transform with motion compensation, has been introduced. For image sequence with slow motion, according to the characteristic of the wavelet transformed data, a new coding algorithm, which integrated the improved EZW(Embedded Zerotree Wavelets Encoding) and pixel coding, has been presented. Computer simulation shows...
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