基于相位编码的畸变不变联合变换相关器的设计  

DISTORTION-INVARIANT JOINT TRANSFORM CORRELATOR BASED ON PHASE-ENCODING TECHNIQUE

作　　者：袁祥岩[1] 于大勇[1] 陶纯堪[1] 

机构地区：[1]南京理工大学电光学院432教研室,南京210094

出　　处：《光子学报》2002年第10期1238-1243,共6页Acta Photonica Sinica

摘　　要：采用综合鉴别函数 (SDF)的方法合成几个子参考图象 ,用于解决畸变不变识别问题 通过相位编码技术和对联合功率谱的振幅调制 ,缩小了零级相关峰的宽度 ,锐化了相关峰 ,消除了多目标输入时各目标图象之间的互相关项和参考图象及各目标图象之间的共轭相关项 ,增强了对目标定位和识别的能力 。Based on the theory of synthetic discriminant function,several sub reference images are constructed,and in this way,the distortion invariant problem is solved.Using phase encoding technique and amplitude modulation on joint power spectrum,the proposed joint transform correlator greatly reduces the intensity and width of the strong dc component,sharpens the correlation peak,eliminates cross correlations between each input target,and the conjugate cross correlation between the reference and input targets,which are existing in the classical joint transform correlator.All these achievements are accomplished in only one step.At the end,computer simulation is given which proved the efficiency of the proposed method.

关 键 词：设计 联合变换相关器 畸变不变模式识别 综合鉴别函数 相位编码 振幅调制 光学模式识别 

分 类 号：TP391.44[自动化与计算机技术—计算机应用技术] TN624[自动化与计算机技术—计算机科学与技术]