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.
出处
《光子学报》
EI
CAS
CSCD
北大核心
2002年第10期1238-1243,共6页
Acta Photonica Sinica
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
Joint transform correlator (JTC)
Distortion invariant pattern recognition
Synthetic discriminant function(SDF)
Phase encoding
Amplitude modulation
