小孔径成像系统衍射退化图像恢复

Reconstruction of diffraction degradation image for smaller relative aperture imaging system

针对小孔径成像系统图像的衍射退化,本文介绍了一种基于凸集投影法(POCS)的超分辨率图像复原技术,这是一种将各种先验约束引入到计算中以降低噪声和奇异性解的迭代算法,该算法可以很好的保持高分辨率图像的边缘和细节信息。使用衍射退化图像恢复技术的小孔径成像系统在航空航天相机、天文望远镜、受光源、镜头或能量大小限制的特殊光学成像系统等场合有广泛的应用前景。

A super-resolution technology of POCS to deal with diffraction degradation of smaller relative aperture imaging system is introduced. It's an iterative method with prior information for decreasing noise and singular values, and could preserve the edge and other detail of the image well. The smaller relative aperture system with diffraction degradation image reconstruction technology can be used widespread in aviatic camera, astronomic telescope and some special optical imaging system with restriction on light source, lens or optical energy.