应用光学
應用光學
응용광학
JOURNAL OF APPLIED OPTICS
2009年
5期
783-786
,共4页
傅里叶变换%梅林变换%对数极坐标变换%傅里叶-梅林变换%联合变换相关
傅裏葉變換%梅林變換%對數極坐標變換%傅裏葉-梅林變換%聯閤變換相關
부리협변환%매림변환%대수겁좌표변환%부리협-매림변환%연합변환상관
Fourier transformation (FT)%Mellin transformation (MT)%log-polar transformation (LPT)%Fourier-Mellin transformation (FMT)%joint transform correlation (JTC)
针对尺度缩放和角度旋转变化目标相关识别率低的问题,在联合相关识别中加入傅里叶-梅林变换方法.采用傅里叶-梅林变换(FMT)中的对数极坐标变换、梅林变换、傅里叶变换具有的旋转、尺度、平移(RST)不变性,可以提高JTC图像识别的性能,实现畸变-不变图像的识别.利用联合变换相关器对角度旋转0°～40°、尺度变化0～20%的目标进行计算机仿真实验.实验结果表明:在JTC中采用FMT可以实现畸变-不变图像的识别.
針對呎度縮放和角度鏇轉變化目標相關識彆率低的問題,在聯閤相關識彆中加入傅裏葉-梅林變換方法.採用傅裏葉-梅林變換(FMT)中的對數極坐標變換、梅林變換、傅裏葉變換具有的鏇轉、呎度、平移(RST)不變性,可以提高JTC圖像識彆的性能,實現畸變-不變圖像的識彆.利用聯閤變換相關器對角度鏇轉0°～40°、呎度變化0～20%的目標進行計算機倣真實驗.實驗結果錶明:在JTC中採用FMT可以實現畸變-不變圖像的識彆.
침대척도축방화각도선전변화목표상관식별솔저적문제,재연합상관식별중가입부리협-매림변환방법.채용부리협-매림변환(FMT)중적대수겁좌표변환、매림변환、부리협변환구유적선전、척도、평이(RST)불변성,가이제고JTC도상식별적성능,실현기변-불변도상적식별.이용연합변환상관기대각도선전0°～40°、척도변화0～20%적목표진행계산궤방진실험.실험결과표명:재JTC중채용FMT가이실현기변-불변도상적식별.
Fourier-Mellin transformation (FMT) was added in the optical joint transform correlator (JTC) recognition of the rotating and rescaling targets to overcome the low recognition ratio. The log?polar transformation, Mellin transformation and Fourier transformation used respectively in the Fourier-Mellin Transformation (FMT), which has the invariance of rotation, scale and translation (RST), can eliminate the effect of distortion and improve the performance of image recognition. The simulation experiment of the correlation recognition for the targets with rotation angle of 0-40° and the dimension variation range of 0-20% was carried out with JTC. In comparison with the results of FMT, it is found that FMT added to JTC can realize the distortion-invariant image recognition.
