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It should be complete, self-explanatory, and not require reference to the pa A new adaptive reversible watermarking algorithm based on wavelet lifting scheme is proposed in this letter. In the algorithm, watermark is embedded in the sub-band LL1 generated from 1-level wavelet lifting scheme, and the position information with small size is kept as a secret matrix, the threshold T can be adaptive selected...
Researching for practical network communication technology, this paper designs a network communication system running under the C/S (client/server) mode. Based on the socket communication, the network communication part adopts TCP/IP protocol and UDP protocol. By the system, users in LAN could communicate with each other in real time, conveniently and safely, the function of sending instructions and...
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