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Analysis and Research JPEG standard compression algorithm based on still images
Pages: 51-53
Year: Issue:  12
Journal: Automation & Instrumentation

Keyword:  Image compressionCompression algorithm;
Abstract: 介绍了JPEG标准、JPEG2000标准及其相比JPEG标准的改进和优点.通过对JPEG标准压缩流程及算法的分析与研究,得到JPEG标准压缩的基本原理:利用人类的视觉特点对亮度分量的精度敏感,而对色度分量的精度迟钝,将RGB颜色模式转换为YCCb颜色模式;基于视觉特点来抑制高频部分使用离散余弦变换和量化来实现;应用完全可逆的熵编码即霍夫曼编码使比特序列更小.
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