基于能量分布的红外像点定位分析方法  

Position analysis method of infrared image point based on energy distribution

作　　者：李斌[1] 刘刚[1] 胡秋平[1] 刘钊[1] 

机构地区：[1]中国华阴兵器试验中心,陕西华阴714200

出　　处：《应用光学》2014年第6期1088-1093,共6页Journal of Applied Optics

基　　金：武器装备试验预研基金(2009SYZX06003)

摘　　要：在红外探测器的应用中,常用统计分析、算例验证等方法研究目标成像精确定位问题。鉴于上述方法难以充分阐释物理意义与揭示普遍规律,提出基于能量分布及成像特征的分析方法,针对红外探测目标成像精确定位问题,利用能量分布和数字图像中成像规律,研究像点定位及精度分析。研究了红外目标成像和数字图像特点,建立了定位模型和方法流程;分析了定位误差影响因素,实现了定位结果精度评定;最后结合典型应用实例,进行了计算验证。该方法与已有方法相比,分析过程更直观,获取了红外像点定位分析的理论依据,并给出了定位结果的精度水平:通常红外成像应用中,精度优于1/6像元;在成像较大时,精度可达1/10像元以上。该研究结论对红外探测应用中目标准确定位具有重要意义。In order to solve the problem of infrared image point position analysis ,a method based on energy distribution was proposed .The image point position and accuracy were analyzed by the digital image processing techniques .The position analysis model and method flow were studied according to the image characteristics of infrared target ;secondly ,based on the analysis of position error factors ,the accuracy evaluation was completed;finally ,a typical application example was tested and verified through calculation .Compared with the traditional method ,it is show n that the method based on energy distribution can be employed in position analysis of in‐frared image point with visual representation and high precision :the accuracy is better than 1/6 pixel usually or even better than 1/10 pixel for larger image .The method is significant in the research on IR detecting instrument and position analysis .

关 键 词：红外像点 定位精度 能量分布 艾里斑 

分 类 号：TN215[电子电信—物理电子学]