基于CCD阵列错排的图像差分超分辨重建方法  

Super Resolution Reconstruction of Image Difference Based on CCD Staggered Arrays

作　　者：张元[1] 钟兴[1] 金光[1] 王天聪[1] 

机构地区：[1]中国科学院长春光学精密机械与物理研究所,吉林长春130033

出　　处：《液晶与显示》2011年第6期841-846,共6页Chinese Journal of Liquid Crystals and Displays

基　　金：国家863高技术研究发展计划资助项目(No.2011AA7020103)

摘　　要：借助阵列错位排列技术通过将多条线阵CCD按特定方式错位排列,可以实现在不提高光学成像系统参数要求和减小CCD像元尺寸的前提下提高图像分辨率的目的,提出了一种利用4条线阵CCD的错排将图像两个方向分辨率均提高1.5倍的图像超分辨方法,利用循环方法解决了单次运算量大的问题。通过数字仿真实验验证了该方法的有效性,搭建了仿真成像平台进行实验。对鉴别率板的成像结果表明,图像分辨率近似提高为原始的1.42倍,与提高1.5倍的理想情况相差不大。同时,从图像所包含信息量的角度,利用图像的信息熵进行了评价,说明了重建后图像的信息量相对原始图像确有了提高。The image resolution can be improved without increasing the requirement of optical imaging systems＇s parameters or decreasing the size of CCD pixel by staggered arrays technology,which arranges several CCDs in a specific mode.In this paper,an image super resolution method of improving the image resolution for 1.5 times both in two directions by 4 linear arrays staggered based on this technology was presented,which avoids the large computation in a single time by using circulation method.This method is proved effectively by the digital simulation,and a simulated experiment platform was constructed to test its feasibility.The image resolution is improved about 1.42 times of the unreconstructed image according to the imaging experiment of resolution chart,which is closed to 1.5 times in ideal case.Also,the reconstructed and unreconstructed images was evaluated by the image information entropy,which proves that the reconstructed image contains more information.

关 键 词：CCD采样 阵列错排 超分辨率重建 

分 类 号：TP751[自动化与计算机技术—检测技术与自动化装置]