A Multi-Mode Self-Adaptive Compression System for Color Images Based on Low Pass Filter
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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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Key words:
- filter /
- algorithms /
- picture coding /
- color image
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[1]马小虎,张明敏.多媒体数据压缩标准及实现[M].北京:清华大学出版社,1996.24~195. [2]朱艳秋,陈贺新.静止彩色图像压缩编码技术[J].中国图像学报,1997,2(7):484~485. [3]朱艳秋,陈贺新.彩色图像三维矩阵变换压缩编码[J].电子学报,1997,2(7):16~21. [4]Pei S C, Cheng Chingmin. A novel block truncation coding of color images using a quaternion-moment-preserving Principle[J]. IEEE Trans Commun, 1997,45(5):583~594. [5]Panos N. A high-quality fixed-length compression scheme for color images[J]. IEEE Trans Commun, 1995,43(11):2672~2677. [6]吴乐南. 数据压缩的原理与应用[M].北京:电子工业出版社,1995.1~240. [7]误成柯.图像通信[M].西安:西安电子科技大学出版社,1989. [8]王兆华.二维低通序滤波器的研究[J].通信学报,1987,(7):38~48. [9]张 京.遥感图像四倍准实时压缩方案研究 .北京:北京航空航天大学宇航学院,1996.31~48.
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