空间目标幸运成像技术的实验研究  

Experimental Research of Lucky Imaging Technique for Spatial Objects

作　　者：刘镪[1] 任晨纲[1] 孙穗[1] 胡浩军[1] 梁永辉[1] 

机构地区：[1]国防科学技术大学光电科学与工程学院,湖南长沙410073

出　　处：《激光与光电子学进展》2011年第1期73-77,共5页Laser & Optoelectronics Progress

摘　　要：幸运成像技术是一种基于目标序列短曝光图像选取、配准、叠加的事后处理方法,能够有效降低大气湍流导致的成像闪烁和抖动对图像质量的影响,提高地基望远镜的成像分辨率。首先介绍了幸运成像技术的基本原理和处理流程,然后应用该项技术,对新月月面进行了幸运成像观测实验,给出了对获得的图像进行处理和分析的结果。处理结果表明,幸运成像技术能够明显地提高空间目标通过湍流大气后的成像质量。对处理结果用小波变换的方法进行了图像增强,给出了增强结果图像和像质评价,增强结果表明,图像增强能够进一步提高幸运成像结果的质量,改善结果图片的视觉效果。Lucky imaging technique is an image post-processing method based on selecting-recentring-coadding of sequence short-exposure images of objects, which can reduce the influence of image quality because of turbulence- induced imaging motion-blur restoration and reduce the resolution loss. The basic theory and flow of the lucky imaging are described and the experimental observation of crescent through atmospheric turbulence is reported. Results show that the lucky imaging technique can improve the imaging resolution of spatial objects through atmospheric turbulence, The image enhancement for lucky imaging results based on wavelet transform is processed. The results after enhancement show that the image enhancement technique can improve the imaging resolution farther and the visual effect.

关 键 词：图像处理 幸运成像 大气湍流 像质评价 图像配准 

分 类 号：O436[机械工程—光学工程]