摘要
将CLEAN算法用于天文图像空域重建方法 :迭代位移叠加法中的消卷积过程 ,由于它同样是在空间域中进行的迭代减法过程 ,避免了必须把图像变换到傅里叶空间频率域中 ,然后用除法消卷积的传统做法 ,因而满足了仅在空间域中重建目标像的需要 ,使迭代位移叠加法更加简捷。用该方法对天文目标进行的观测实验得到了很好的像复原结果。
CLEAN algorithm is used to the deconvolution process of astronomical image reconstruction method:Iterative Shift-and-Add working in spatial domain,owing to it workes in spatial domain too,so that the traditional method in which the images must be transformed into the Fourier spatial freqency domain and then to do deconvolute with division is avoided.Therefore the need that an object image can be recovered only in spatial domain is satisfied,and it makes the Iterative Shift-and-Add method become more simple.Some good image reconstruction results were got by the technique in the experiments on astronomical observation.
出处
《云南天文台台刊》
CSCD
2000年第2期1-9,共9页
Publications of the Yunnan Observatoty
基金
国家自然科学基金!( 1 9873 0 1 7)
中科院天文口基金
云南省自然科学基金!( 97A0 1 4G)资助项目
关键词
线性成像系统
空域像复原
CLEAN算法
天文图像
linear imaging system
spatial domain inreconstruct image
deconvolution
CLEAN algorithm
