基于双投影策略的红外图像配准方法  

A fast IR image registration algorithm based on dual-axis projection

作　　者：陈娅冰[1] 王永仲[1] 

机构地区：[1]军械工程学院,河北石家庄050003

出　　处：《航天电子对抗》2009年第3期22-24,50,共4页Aerospace Electronic Warfare

摘　　要：图像配准是红外图像处理技术的前提,广泛应用于成像制导、光电侦查及工业实时监控等领域。考虑红外图像的实时配准需求,利用对数极坐标图像的尺度、转不变特性,将配准过程从直角坐标空间引入到对数极坐标空间,提出了基于双投影策略的配准算法,将二维空间的配准参数估计转换成两个一维曲线的空间距离估计。此算法在保证尺度变化及旋转的匹配精度条件下,轴向投影统计大大降低匹配计算量。Image registration is a key technology applied in infrared guidance, reconnaissance, real time monitor and so on. Considering the need of real time and image in log-polar coordinate having scale and rotate unvariance property,a fast IR image registration algorithm based on coordinate dual-axis projection is proposed. Registration parameters estimation of image is transformed in projection curve distance estimation in new log- polar space. The new algorithm greatly speeds up processing from Cartesian coordinates to log-polar coordi- nates and ensures the reliability of matches. Theoretical analysis and experiment show that this method has better performance in both recognition speed and accuracy.

关 键 词：图像配准 对数极坐标 红外凝视系统 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]