| 基于视觉系统模型的SAR图像压缩方法 |
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| 引用本文： | 沈冰,张海波,郎方年,朱兴华,杨定宇.基于视觉系统模型的SAR图像压缩方法[J].半导体光电,2010,31(4). |
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| 作者姓名： | 沈冰 张海波 郎方年 朱兴华 杨定宇 |
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| 作者单位： | 成都信息工程学院,光电技术学院,成都,610225;成都信息工程学院,控制工程学院,成都,610225;成都大学,计算机学院,成都,610054 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 提出一种基于视觉模型的合成孔径雷达(SAR)图像压缩方法,对SAR图像分解后不同频带的小波系数结合其能量分布和人眼对不同频率段的敏感度采用可变步长进行量化与压缩编码,应用嵌入式小波图像压缩算法,以峰值信噪比和均方误差等作为评价指标,对比进行了实验.结果表明,在保证压缩比不变的前提下,采用本算法获得的恢复图像的主观质量有所提高,较好地保留了图像的纹理细节,提高了图像的峰值信噪比.
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| 关 键 词： | SAR图像压缩 视觉系统模型 嵌入式零树小波 多级树集合划分编码 |
Algorithm of SAR Image Compression Based on Human Vision System |
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| SHEN Bing,ZHANG Haibo,LANG Fangnian,ZHU Xinghua,YANG Dingyu.Algorithm of SAR Image Compression Based on Human Vision System[J].Semiconductor Optoelectronics,2010,31(4). |
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| Authors: | SHEN Bing ZHANG Haibo LANG Fangnian ZHU Xinghua YANG Dingyu |
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| Institution: | SHEN Bing1,ZHANG Haibo2,LANG Fangnian3,ZHU Xinghua1,YANG Dingyu1(1.Dept.of Optoelectronic Technology,2.Dept.of Control Engineering,Chengdu University of Information Technology,Chengdu 610225,CHN,3.School of Computer Science,Chengdu University,Chengdu 610054,CHN) |
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| Abstract: | SAS image compression based on the model of human vision system is presented in this paper.The wavelet coefficients of the decomposed SAR images were variably quantized and coded based on the energy distribution of wavelet's different frequency bands and corresponding human vision sensitivity.Using the embedded wavelet image decompressed algorithm,and the evaluation parameters of PSNR and MER,experiments are carried out to make comparisions.The results show that,under the condition of the same ratio of imag... |
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| Keywords: | SAR decompression model of human vision system embedded zero wavelet set partitioning in hierarchical trees |
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