Image Restoration of Optical Sparse Aperture Based on Single Point-image
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摘要: 为了定量评价光学稀疏孔径系统的图像复原效果,提出了一种以稀疏孔径系统单点像作为退化图像进行图像复原的方法.对稀疏孔径系统的单点像进行适当的复原处理,可获得类似爱里斑(即该稀疏孔径等效圆口径系统的单点像)的复原图像.通过比较该复原图像和爱里斑相似程度,即可对该复原算法(或者参数)进行评价.以法国SOLARNET光学稀疏孔径系统为例演示了上述图像复原过程.仿真结果表明,基于单点像的图像复原方法是可行的.Abstract: To quantitativly evaluate of image restoration of optical sparse aperture systems,a image restoration method that uses single point image as the degradation image is presented.When this degradation image is processed by appropriate restoration algorithm (with proper parameters),a distribution similar to Airy pattern is obtained.By calculating the correlation coefficient of the restored image and equivalent filled system's Airy pattern,the restoration algorithm can be evaluated.As an example,image restoration and evaluation of SOLARNET (France optical sparse aperture system) are achieved to demonstrate this method.Results show that complicated image can be restored as the same resolution and image quality as an equivalent filled system's,by using the same restoration algorithm of the single point image.
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Keywords:
- sparse aperture /
- image restoration /
- single point image
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