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一种基于场景的非均匀校正算法
引用本文:张俊举,孙恋君,王世允,常本康,钱芸生.一种基于场景的非均匀校正算法[J].激光与红外,2006,36(3):174-177.
作者姓名:张俊举  孙恋君  王世允  常本康  钱芸生
作者单位:南京理工大学电子工程与光电技术学院,江苏,南京,210094
摘    要:提出了一种基于场景的非均匀校正算法,它不仅可以消除红外焦平面阵列响应特性的 非均匀性,还可以补偿其漂移。建立了一个包含漂移因素的红外焦平面探测器响应模型,该模型构成了算法的基础。非均匀校正算法分两步执行:首先执行初步非均匀校正消除大部分的非均匀性,然后利用运动场景形成的红外图像序列来补偿响应特性的漂移噪声。场景运动估计是本算法的关键,块匹配方法被介绍来实现准确地运动估计。真实的红外图像数据说明了该算法的有效性。

关 键 词:红外技术  非均匀校正  红外焦平面阵列  运动估计  块匹配
文章编号:1001-5078(2006)03-0174-04
收稿时间:2005-10-08
修稿时间:2005-10-08

A Nonuniformity Correction Algorithm Based on Scene Techniques
ZHANG Jun-ju,SUN Lian-jun,WANG Shi-yun,CHANG Ben-kang,QIAN Yun-sheng.A Nonuniformity Correction Algorithm Based on Scene Techniques[J].Laser & Infrared,2006,36(3):174-177.
Authors:ZHANG Jun-ju  SUN Lian-jun  WANG Shi-yun  CHANG Ben-kang  QIAN Yun-sheng
Abstract:A correction algorithm has been developed to remove nonuniformity and to compensate drift noise in the response of infrared focal-plane arrays(IRFPA) imaging system.An IRFPA sensor model,which considers IRFPA sensors' response drift,is set up as the basis of the algorithm.The algorithm is carried out in two steps.A preliminary nonuniformity correction is firstly carried out to remove most spatial nonuniformity of an IRFPA.Then the drift in the response of detectors is compensated with consecutive infrared image sequences,which relies on accurate estimation of infrared scene's motion.The formulas of the algorithm are presented,and the ability of compensating drift noise and temporal noise is evaluated.A block-matching method is also introduced to realize accurate motion estimation.Some real infrared data are finally provided to demonstrate the algorithm's validity.
Keywords:infrared techniques  nonuniformity correction  infrared focal plane arrays  motion estimation  block matching
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