摘要
运用傅里叶变换相关识别技术实现了无畸变、有平移多目标的检测。在此基础上讨论了图像边缘信息和非边缘信息对相关性能的影响。运用分数傅里叶变换相关识别技术实现了目标图像存在尺度、旋转畸变而无平移变化时的目标检测。结果表明,分数傅里叶变换的级次选择对目标图像的旋转和尺度畸变有一定的补偿作用。在分数傅里叶变换相关中,通过简单的级次调节可实现一定范围内的旋转、尺度畸变不变识别。
The traditional correlation recognition is applied to realize the nondistortion recognition.The influence of image edges to the quality of the correlation peak is analyzed.The fractional Fourier transform is applied to realize the distortion recognition.The study results indicate that the fractional Fourier transform orders have a compensation function on the target images' rotation and scale distortion.Using fractional correlation,simply adjusting the transform orders,certain range rotation and scale distortion recognition can be realized.
出处
《光学技术》
CAS
CSCD
北大核心
2007年第S1期192-194,共3页
Optical Technique
关键词
光学相关
傅里叶变换
分数傅里叶变换
尺度不变
旋转不变
相关峰
optical correlation
Fourier transform
fractional Fourier transform
scale invariant
rotation invariant
correlation peak
