| 局部相关跟踪算法在太阳磁场观测中的应用 |
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| 引用本文： | 林佳本,邓元勇,胡柯良.局部相关跟踪算法在太阳磁场观测中的应用[J].计算机工程与应用,2006,42(27):203-205. |
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| 作者姓名： | 林佳本 邓元勇 胡柯良 |
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| 作者单位： | 中国科学院国家天文台,北京,100012 |
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| 基金项目： | 国家自然科学基金;国家自然科学基金 |
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| 摘 要： | 在太阳磁场观测系统中通过使用相关跟踪算法发现并消除原始图像间的抖动错位,提高磁场观测数据的空间分辨率。然而相关算法的实现比较耗时,为保证系统观测数据的时间分辨率,系统中采取了缩小相关窗口的尺寸——选取特征区域作为相关窗口的局部相关跟踪算法,并结合快速傅立叶算法和IntelR图像处理函数库等方法优化相关运算,提高了系统的时间分辨率。系统指标满足常规天文观测的要求并已投入使用。
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| 关 键 词： | 局部相关跟踪算法 图像处理 分辨率 |
| 文章编号： | 1002-8331-（2006）27-0203-03 |
| 收稿时间： | 2006-05-01 |
| 修稿时间： | 2006-05-01 |
Application of LCT in Solar Magnetic Field Observation |
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| LIN Jia-ben,DENG Yuan-yong,HU Ke-liang.Application of LCT in Solar Magnetic Field Observation[J].Computer Engineering and Applications,2006,42(27):203-205. |
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| Authors: | LIN Jia-ben DENG Yuan-yong HU Ke-liang |
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| Affiliation: | National Astronomical Observatories,Chinese Academy of Sciences,Beijing 100012 |
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| Abstract: | Correlation tracking method is applied in the solar observing system in order to find the displacements among image series and improve the spatial resolution of the magnetogram. Correlation method is time consuming,for high temporal resolution,the size of the correlation window is reduced,selected from featured area,so called this method as local correlation tracking method,and Fast Fourier Transform(FFT) method combined with IntelR image processing library is applied in the program to realize correlation method.These improvements make the system can get high spatial and temporal resolution at the same time,and now the system can be used in routine observation. |
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| Keywords: | local correlation tracking methods image processing resolution |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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