图象自适应对称余弦变换编码方法
ADAPTIVE SYMMETRIC COSINE TRANSFORM CODING OF IMAGE
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摘要: 本文提出一种自适应的图象变换编码方法。这一方法把二维对称余弦变换应用于图象分块处理,并且通过估计和传送图象子块的统计参量来得到自适应的变换系数量化比特分配阵。本文还给出了这一方法的分析与模拟结果。
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关键词:
Abstract: An adaptive transform coding method of image is presented, in which an image is devided into a number of image sub-blocks and two-dimensional symmetrie cosine transform is performed. And the bit-allocation map for adaptive quantization of transform coeffieients is obtained through estimation and transmission of some parameters of the sub-blocks. In the paper analytical and simulated experimental results of the method are given. -
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