可测量大陡峭度物体的傅立叶变换轮廓法（MFTP）

Modifed Foudransform Profilomery for the Measurement of 3-D Steep Shapes

本文在简要地分析了傅立叶变换轮廓法（ＦＴＰ）和改进型傅立叶变换轮廓法（ＩＦＴＰ）测量三维物体形状轮廓的可测陡峭度限制后，提出了一种可测量大陡峭度物体的傅立叶变换轮廓法（ＭＦＴＰ），给出了详细的测量方法和理论分析。利用ＦＴＰ自身的特点，消除了ＩＦＴＰ引入的人为误差，提高了ＦＴＰ的能测陡峭度。

Having discribed the measurable slope of Fourier transform profilometry(FTP)and improved FTP(IFTP),a modified FTP(MFTP)for the measurement of 3-D steep shapes is proposed in this paer.The detail measuring method and theory analysis ars also given. The artificial error introduced in IFTP was eliminated by utilizing the merits of FTP.