| 点扩散函数的改进倾斜刃边重建的高精度估计 |
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| 引用本文： | 范冲,李冠达,伍超云,李成,钟蕾.点扩散函数的改进倾斜刃边重建的高精度估计[J].测绘学报,2015,44(11):1219-1226. |
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| 作者姓名： | 范冲 李冠达 伍超云 李成 钟蕾 |
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| 作者单位： | 中南大学地球科学与信息物理学院, 湖南 长沙 410083 |
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| 基金项目： | 国家973计划，中南大学研究生自主探索创新项目 |
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| 摘 要： | 基于现有刃边法提出了一种不受刃边倾角限制的点扩散函数高精度估计算法,通过改进刃边拟合、样本去噪与防走样重采样优化边缘扩散函数重建过程,并采用高斯函数拟合点扩散函数得到高精度PSF估值。试验表明,相较于现有刃边法,本文方法的估计精度与稳定性有显著提高。
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| 关 键 词： | 遥感图像处理 图像退化 点扩散函数 刃边法 |
| 收稿时间： | 2014-08-31 |
| 修稿时间： | 2015-05-04 |
High Accurate Estimation of Point Spread Function Based on Improved Recon-struction of Slant Edge |
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| FAN Chong,LI Guanda,WU Chaoyun,LI Cheng,ZHONG Lei.High Accurate Estimation of Point Spread Function Based on Improved Recon-struction of Slant Edge[J].Acta Geodaetica et Cartographica Sinica,2015,44(11):1219-1226. |
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| Authors: | FAN Chong LI Guanda WU Chaoyun LI Cheng ZHONG Lei |
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| Institution: | School of Geosciences and Info-physics, Central South University, Changsha 410083, ChinaAbstract |
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| Abstract: | A high accurate estimation algorithm for point spread function which is free from edge slant angle is proposed.In this algorithm,high accuracy estimation of point spread function is gained by improved edge l ine fitting,sample denosing and anti-al iasing resampl ing.Compared with the existing slanted edge methods,the new method yields a significant improvement in accuracy and stabi l ity. |
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| Keywords: | remote sensing image processing degradation point spread function edge method |
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