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With the extensive application of RFID technology, people pay more and more attention to its security and privacy issues. Currently, security issues have become major factors which impede the large-scale applications of RFID technology. In this paper, security issues existing in RFID system are analyzed and the main authentication mechanisms proposed at(More)
— In this paper, a fast motion estimation algorithm based on the spatial correlation of motion vectors is presented. The current block is classified as correlation-type block or independent-type block in the proposed algorithm, by utilizing the correlation information of three neighboring motion vectors. In order to reduce the computational complexity of(More)
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