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公开(公告)号:US5468069A
公开(公告)日:1995-11-21
申请号:US100928
申请日:1993-08-03
申请人: Viktor K. Prasanna , Cho-Li Wang , Heonchul Park
发明人: Viktor K. Prasanna , Cho-Li Wang , Heonchul Park
CPC分类号: G06T9/008
摘要: Video data compression techniques reduce necessary storage size and communication channel bandwidth while maintaining acceptable fidelity. Vector quantization provides better overall data compression performance by coding vectors instead of scalars. The search algorithm and VLSI architecture for implementing it is herein disclosed, and such a search algorithm is useful for real-time image processing. The architecture employs a single processing element and external memory for storing the N constant value hyperplanes used in the search, where N is the number of codevectors. The design does not perform any multiplication operation using the constant value hyperplane tree search, since the tree search method is independent of any L.sub.q metric for q between one and infinity. Memory used by the design is significantly less than memory employed in existing architecture.
摘要翻译: 视频数据压缩技术在保持可接受的保真度的同时减少必要的存储大小和通信信道带宽。 矢量量化通过编码矢量而不是标量来提供更好的总体数据压缩性能。 这里公开了用于实现它的搜索算法和VLSI架构,并且这种搜索算法对于实时图像处理是有用的。 该架构采用单个处理元件和外部存储器来存储在搜索中使用的N个恒定值超平面,其中N是代码矢量的数量。 该设计不使用常数值超平面树搜索来执行任何乘法运算,因为树搜索方法独立于一个和无穷大之间的q的任何Lq度量。 设计使用的内存明显小于现有架构中使用的内存。