Xu J.-J.,Microsoft |
Zhang W.-M.,Microsoft |
Yu N.-H.,Microsoft |
Guo B.-A.,Aisino Corporation Inc. |
Tien Tzu Hsueh Pao/Acta Electronica Sinica | Year: 2012
Under the framework of joint information embedding and lossy compression, an algorithm based on secret sharing and unequal protection is proposed. Comparing with arithmetic coding which compressed watermark length, our algorithm can dramatically reduce the amount of information bits embedded into video cover while guaranteeing watermarking authentication. Our algorithm not only improves compression efficiency but also adopts unequal protection strategy, thus improving watermark's robustness considerably. Furthermore, by making full use of dependency among neighbouring macroblocks, an adaptive watermarking algorithm based on motion vectors is proposed to effectively control motion vector's modification and guarantee video quality after watermarking. Experiments demonstrate that this algorithm not only keeps a small PSNR loss and satisfactory visual quality, but also shows resistance against frame-deletion attack.
Wang B.,North China University of Technology |
Tang C.,Peking University |
Qi Y.,Peking University |
Qi Y.,Aisino Corporation Inc. |
And 3 more authors.
IEEE Transactions on Information Theory | Year: 2012
Cyclic codes with two zeros and their dual codes as a practically and theoretically interesting class of linear codes have been studied for many years and find many applications. The determination of the weight distributions of such codes is an open problem. Generally, the weight distributions of cyclic codes are difficult to determine. Utilizing a class of elliptic curves, this paper determines the weight distributions of dual codes of q-ary cyclic codes with two zeros for a few more cases, where q is an odd prime power. © 1963-2012 IEEE.
Zheng L.,Logistics Command Academy |
Li J.,Aisino Corporation Inc. |
Liu X.-K.,Academy of Military Transportation |
Wang C.-W.,Logistics Command Academy
Xitong Fangzhen Xuebao / Journal of System Simulation | Year: 2010
The ideas and method about the realization of a scene simulation platform using Visual C++ and Direct SDK were introduced. The platform adopted the overall structure of "twin platform based on the shared core", and reusable framework and mechanism for the further development were founded. Three-tier design pattern of "function entity, collection management and user interface" improved code reusing. So the complexity of the problem was reduced, and the software development efficiency was improved. In this scene simulation platform, the management mechanism of extensible visual object was established, the display optimization of medium or small scene and rapid terrain-matching were realized, the functions of particle system-based special effects about rain, snow, smog and blast, etc, and creating, editing, playing and saving key frame animation were achieved. Finally, the applied example was researched.
Zhang W.,Changan University |
Zhang W.,China Power Engineering Consulting Group Corporation |
Deng J.,China Power Engineering Consulting Group Corporation |
Zhang X.,Aisino Corporation Inc.
Beijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology | Year: 2015
The lack of unified planning of E-government system in China leads to incapable interconnection among data and systems. In order to solve the problem, the technical characteristics like loose coupling, openness and long-term stability of service oriented architecture (SOA) were used to construct the safety flowing and emergency system of provincial highway and waterway, then Heilongjiang Province was taken as an example to construct the system through the oriented service workflow technology adapting to the distribution, heterogeneous, dynamic network environment of Heilongjiang government complicated application demand, and the transfer of the system from function management to business process management was realized in this paper. © 2015, Editorial Department of Transaction of Beijing Institute of Technology. All right reserved.
Kim Y.,Aisino Corporation Inc.
Microwave and Optical Technology Letters | Year: 2013
In this article, a one-off seal function radio frequency identification (RFID) tag antenna with an omnidirectional radiation pattern when mounted on a liquid bottle is presented. The RFID tag antenna was pasted into the plastic open cap surface or inserted the clamping inner ring for further enhanced the quality of the liquid bottle seal function. Also, to using the RFID tag antenna for the different bottle neck radius, the radiation pattern and rectangular feeding loop was tilted to horizontal reference plane. The measured results show that these RFID tag antennas have good performance when attached onto the liquid bottle surfaces. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:375-379, 2012; View this article online at wileyonlinelibrary. com. DOI 10.1002/mop.27285 Copyright © 2012 Wiley Periodicals, Inc.