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Most high-dimensional indexing structures proposed for similarity query in content-based image retrieval (CBIR) systems are tree-structured. The quality of a high-dimensional tree-structured index is mainly determined by its insertion algorithm. Our approach focuses on an important phase in insertion, that is, the tree descending phase, when the tree is explored to find a host node to accommodate...
H.264/AVC based lossless image compression is a latest and extent technique for data compression. Block based intra-prediction is originally exploited in this extension. DPCM based intra-prediction is an outstanding technique to improve the compression ratio for this research area. In this paper, we propose an intra-mode dependent coding scheme to further improve the performance of DPCM-based compression...
The technique of motion vector estimation can remove the information of temporal redundancy to reduce the bit rate for video coding. Due to the great computation required in motion vector estimation, many simplified search algorithms have been proposed. In particular, one-bit transform scheme can significantly reduce the search complexity. This paper proposes a dynamic threshold scheme to form the...
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