北京航空航天大学学报 ›› 2002, Vol. 28 ›› Issue (2): 213-216.

• 论文 • 上一篇    下一篇

基于低通滤波的彩色图像多模式自适应系统

杨博, 周孝宽   

  1. 北京航空航天大学 宇航学院
  • 收稿日期:2000-08-23 发布日期:2010-09-26
  • 作者简介:杨 博(1963-),女,河南安阳人,讲师,100083,北京.

A Multi-Mode Self-Adaptive Compression System for Color Images Based on Low Pass Filter

A Multi-, YANG Bo, ZHOU Xiao-kuan   

  1. Beijing University of Aeronautics and Astronautics, School of Astronautics
  • Received:2000-08-23 Published:2010-09-26

摘要: 在彩色图像压缩中,"分量编码"技术已较为成熟,JPEG(Joint Photographic Experts Group)是其主要的代表之一.但对于一些要求速度较高的场合,仍不能满足要求.通过对这一技术中的各个环节的研究发现,将YUV空间进行旋转,使图像色域发生变化,压缩结果可得到改善.比较各种插值方法对恢复图像质量的影响,采用了二维重叠数字低通滤波器进行插值,同时配合使用快速的单色多模式自适应压缩算法,从而使系统不但有较宽的适用范围,而且在一定的压缩倍数范围内,恢复信噪比比JPEG高.

Abstract: To overcome the drawbacks of available techniques in rapid real-time processing of color images, a color image compression system with higher processing rate and higher PSNR was put forward. It was found that with the rotation of YUV space, the chromatogram of an original image can be changed and so the compression effect can be improved. By comparing the effects of available interpolation methods on the quality of the last image restored, a two-dimensional digital over lap low-pass filter was used, combined with a monochromatic multi-mode self-adaptive compression method. By the computer testes, it was demonstrated that the proposed system has an obviously higher processing rate and PSNR than JPEG method within a fixed range of compression ratio.

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