考虑探测器填充率及微扫描对位偏差的扫描型亚像元热成像算法  

SCANNING TYPE SUB-PIXEL THERMAL IMAGING ALGORITHM TAKING ACCOUNT OF DETECTOR FILLING RATE AND MICRO-SCANNING CONTRAPOSITION BIAS

作　　者：金伟其[1] 陈翼男[1] 王霞[1] 李雅琼[1] 王岭雪[1] 

机构地区：[1]北京理工大学光电工程系,北京100081

出　　处：《红外与毫米波学报》2008年第4期308-312,共5页Journal of Infrared and Millimeter Waves

基　　金：国防科工委基础研究(A1120060488);十一五总装预研(40405050103)资助项目

摘　　要：针对实际扫描型亚像元热成像系统可能存在探测器填充率不为1以及微扫描对位偏差,研究了填充率不为1以及存在微扫描对位偏差条件下的亚像元热成像处理算法,证明通过适当的亚像元处理技术依然可获得高分辨力的亚像元成像;给出了适合实时处理的快速处理算法;分析了填充率和对位偏差对亚像元处理图像的影响,为实际亚像元成像系统的装配以及处理算法的调试提供了理论指导.算法的实现对提高扫描型热成像系统的技术性能指标具有重要意义.Aiming at the detector filling rate not equaling to 1 and there existing contraposition bias in actual micro-scanning system, the corresponding sub-pixel thermal imaging algorithm was investigated. It was demonstrated that high resolution sub-pixel imaging could still be obtained by appropriate sub-pixel processing technology. An algorithm adaptive to rapid real-time processing was presented. The influences of filling rate and contraposition bias on reconstructed images were analyzed. The algorithm provides a theoretical guide for the assembly of actual sub-pixel imaging system and debugging of the processing algorithm. The realization of this algorithm will have an important significance in improving the technological performance of scanning thermal imaging system.

关 键 词：焦平面探测器 亚像元热成像 微扫描 填充率 对位偏差 

分 类 号：TN219[电子电信—物理电子学]