Fourier变换轮廓术中采用Gerchberg叠代消除边缘误差

Using Gerchberg iteration to eliminate edge errors in Fourier transform profilometry

运用Gerchberg叠代方法 ,对采集的不满场条纹进行外插处理 ,直到变形条纹的傅里叶频谱的能量集中在正负一基频周围 ,消除两基频的相互混叠 .计算机模拟证实 。

By using method of Gerchberg iteration,the field-unfilled stripes collected are done outer insert treatment,until the energy of deforming stripe Fourier frequency spectrum is gathered around the positive and negative-base frequency's as to eliminate the overlapping of the two base frequency.Computer simulation proves that the above method increases the measuring accuracy of FTP.