摘要
将小波变换应用于圆谐联合变换相关器作旋转不变的目标检测.与高通滤波的圆谐联合变换相关器相比,其输出相关峰宽度、识别力、峰噪比和旋转不变性都有较大改善.小波函数采用改进的Mexican-hat小波,圆谐联合变换相关器采用直流偏置型.给出计算机模拟实验结果.
Wavelet transform is used in the circular harmonic joint transform correlator for ratation- invariant target detection. Comparing with the high pass filtering circular harmonic joint transform correlator, its correlation peak width, discrimination ability, peak-to-noise ratio, and rotation-invariant performance are better. The modified Mexican-hat wavelet is chosen as the wavelet function and the DC bias is adopted for the circular harmonic joint transform correlator. Computer simulaton results are given.
出处
《集美大学学报(自然科学版)》
CAS
北大核心
2000年第1期26-30,共5页
Journal of Jimei University:Natural Science
关键词
光学图像识别
联合变换相关器
小波变换
Optical pattem recognition
Joint travsform correlator
Wavelet transform