Xie Weihua

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The layout of aircraft is a complete NP- problem which is difficult to find an optimal solution. In this paper we simplify the issue for the three-dimensional layout. This text raised the issue of a new line of thought is giving pretreatment to the objects of known layout, and then under the artificial problem in every step of the layout of the best ideas(More)
This paper presents a method to combine the SVD and frame synchrony in watermark. The synchrony code frame, serial number and embedding position is convenient for watermark embedding and extraction. Embedding video watermark uses part of M-series spread spectrum sequence to improve the robustness and none conjunction of video image. The experiment shows(More)
In this paper, a digital signature method based on WEB is presented. Firstly, the normal old system may exist in question of uploading forged user files, integrity and security and upload files with no guarantee, we put forward a method of detection framework based on combination of evidence and reservation information, and digital signature methods related(More)
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