| 基于改进DCT域分类矢量量化的图像编码算法 |
| |
| 引用本文： | 王展青,魏毅峰.基于改进DCT域分类矢量量化的图像编码算法[J].武汉理工大学学报(信息与管理工程版),2005,27(4):80-82. |
| |
| 作者姓名： | 王展青 魏毅峰 |
| |
| 作者单位： | 武汉理工大学,理学院,湖北,武汉,430070 |
| |
| 摘 要： | 提出了一种改进的DCT域分类矢量量化的图像编码算法。该算法结合了快速相关矢量量化算法和DCT域分类矢量量化算法,首先根据已编码的邻块对输入矢量的编码索引进行相关预测,对预测失败的输入矢量采用DCT域分类矢量量化算法编码。测试结果表明,与DCT域分类矢量量化算法相比,所提出的算法显著地减少了编码时间和比特率。
|
| 关 键 词： | 图像编码 分类矢量量化 DCT |
| 文章编号： | 1007-144X(2005)04-0080-03 |
| 修稿时间： | 2005年3月30日 |
A Modified Image Encoding Algorithm Based on a Classified Vector Quantization in the DCT Domain |
| |
| Wang Zhanqing,Wei Yifeng.A Modified Image Encoding Algorithm Based on a Classified Vector Quantization in the DCT Domain[J].Journal of Wuhan University of Technology(Information & Management Engineering),2005,27(4):80-82. |
| |
| Authors: | Wang Zhanqing Wei Yifeng |
| |
| Affiliation: | Wang Zhanqing,Wei Yifeng Wang Zhanqing: Assoc. Prof., School of Sciences,WUT,Wuhan 430070,China. |
| |
| Abstract: | A modified image encoding algorithm based on the correlation vector quantization scheme and classified vector quantization (CVQ) in the DCT domain is presented. Correlative predictions are made in the algorithm. The failed predicted vector is coded with CVQ in the DCT domain. The test results show that this algorithm significantly reduces coding time and bit rates. |
| |
| Keywords: | image coding classified vector quantization DCT |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
