| 用带有平滑约束的CLEAN算法恢复日像仪图像 |
| |
| 引用本文： | 王书振.用带有平滑约束的CLEAN算法恢复日像仪图像[J].中国机械工程,2006,17(7):666-669. |
| |
| 作者姓名： | 王书振 |
| |
| 作者单位： | 西安电子科技大学,西安,710071 |
| |
| 基金项目： | 国家重点基础研究发展计划(973计划);中国科学院资助项目 |
| |
| 摘 要： | 为了解决CLEAN算法处理展源时存在的迭代抖动、收敛不稳定的弊端，借鉴最大熵算法的平滑约束概念，通过修正CLEAN算法迭代过程中的脏束，提出了带有平滑约束的CLEAN算法。通过对国家天文台拟建日像仪图像恢复仿真，验证了该改进算法在图像恢复质量和分辨率两个方面的性能均较CLEAN算法有所提高。
|
| 关 键 词： | 日像仪 CLEAN算法 反卷积 图像恢复 |
| 文章编号： | 1004-132X（2006）07-0666-04 |
| 收稿时间： | 2005-04-25 |
| 修稿时间： | 2005-04-25 |
Heliography Image Reconstruction Using Smooth CLEAN Algorithm |
| |
| Wang Shuzhen.Heliography Image Reconstruction Using Smooth CLEAN Algorithm[J].China Mechanical Engineering,2006,17(7):666-669. |
| |
| Authors: | Wang Shuzhen |
| |
| Abstract: | CLEAN algorithm has the limitation of iterative dithering and convergence instability when it was applied to extend sources processing. Inspired by the ability of Maximum Entropy Method to proceed the extend sources, the paper proposed a CLEAN algorithm with smooth constraint by modifying the dirty beam. Finally the simulation was conducted of radio heliography solar image reconstruction in China National Astronomical Observatories. Results show superiority of the improved algorithm in both image quality and resolution. |
| |
| Keywords: | heliography CLEAN algorithm de-- convolution image reconstruction |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
