| 提高斜模式遥感图像有效分辨率的方法 |
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| 引用本文： | 郑钰辉,汤杨,陈强,韦志辉,夏德深. 提高斜模式遥感图像有效分辨率的方法[J]. 计算机辅助设计与图形学学报, 2009, 21(2) |
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| 作者姓名： | 郑钰辉 汤杨 陈强 韦志辉 夏德深 |
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| 作者单位： | 南京理工大学计算机科学与技术学院,南京,210094;南京信息工程大学计算机与软件学院,南京,210044;南京理工大学计算机科学与技术学院,南京,210094;南京理工大学理学院,南京,210094 |
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| 基金项目： | 国家自然科学基金，中国空间技术研究院重点创新基金 |
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| 摘 要： | 利用梯度保真项具有补偿高频信息的能力,提出一种变分偏微分方程复原方法,用于提高斜模式遥感图像的有效分辨率.分析了斜模式采样条件下混叠现象的产生机理;用最佳倒易晶胞理论求出受混叠与噪声影响最小的斜模式采样图像频谱;对该图像频谱用文中方法去除模糊以得到分辨率提高的图像.实验结果表明,该方法能较好地去除混叠、模糊以及噪声对图像质量的影响,复原图像的信噪比高.
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| 关 键 词： | 斜模式采样 最佳倒易晶胞 图像复原 有效分辨率 |
A Method for Increasing Effective Resolution of Tilting Mode Satellite Image |
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| Zheng Yu-hui,Tang Yang,Chen Qiang,Wei Zhi-hui,Xia De-shen. A Method for Increasing Effective Resolution of Tilting Mode Satellite Image[J]. Journal of Computer-Aided Design & Computer Graphics, 2009, 21(2) |
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| Authors: | Zheng Yu-hui Tang Yang Chen Qiang Wei Zhi-hui Xia De-shen |
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| Affiliation: | School of Computer Science & Technology;Nanjing University of Science and Technology;Nanjing 210094;Computer and Software Institute;Nanjing University of Information Science and Technology;Nanjing 210044;School of Science;Nanjing 210094 |
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| Abstract: | To increase effective resolution of a tilting mode satellite image,we present a novel variational partial differential equation restoration method,which employs the gradient fidelity term to compensate high frequency information.By the method firstly,the mechanism of aliasing phenomenon in the tilting mode sampling condition is analyzed.Then,we use the optimal reciprocal cell theory to gain the sampling image spectrum which contains a minimal amount of aliasing and noise.Finally,we apply the proposed method... |
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| Keywords: | tilting mode sampling optimal reciprocal cell image restoration effective resolution |
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