一种遥感图像振动模糊复原方法  

Vibration blur restoration method of remote sensing image

作　　者：徐沪萍[1] 付文兴[2] 马杰[3] 

机构地区：[1]武汉理工大学物流工程学院,湖北武汉430063 [2]北京机电工程研究所,北京100074 [3]华中科技大学自动化学院多谱信息处理技术国家级重点实验室,湖北武汉430074

出　　处：《华中科技大学学报（自然科学版）》2014年第3期28-32,共5页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(61074156;61104191);华中科技大学自主创新研究基金资助项目;航天支撑技术基金资助项目

摘　　要：针对如何消除和减轻载体不规则角振动带来的成像质量退化,提出了一种全新的在轨遥感图像抖动模糊复原方法.该方法根据星敏感器或者其他载荷拍摄的星图或星空背景自适应估计载体的振动点扩展函数(PSF),然后将该点扩展函数映射到遥感图像,最后应用Richardson-Lucy(RL)复原方法消除和减轻抖动模糊,以提高成像的分辨率和峰值信噪比(PSNR).仿真实验表明:该方法避免了传统复原方法PSF难以估计的问题,有效提高了遥感图像复原的精度和鲁棒性.It is a general problem to eliminate and reduce imaging degradation caused by carrier irregular angle vibration in space remote sensing imaging.A method was proposed to recover vibration blur of on-orbit remote sensing images.The method estimated the point spread function（PSF）of carrier vibration adaptively based on star maps or background shot by star sensors or other loads,and then mapped the PSF to the remote sensing image,and finally Richardson-Lucy（RL）restoration algorithm was used to eliminate and reduce vibration blur to improve resolution and peak signal to noise ratio（PSNR）of images.Experimental results show that compared with traditional methods,the proposed method avoids the difficulties to estimate PSF,and effectively improves the accuracy and robustness of remote sensing image restoration.

关 键 词：遥感 振动 图像复原 点扩展函数 星图 RL复原 

分 类 号：P407.8[天文地球—大气科学及气象学]