New data processing method for improving the measurement accuracy in FTP  

作　　者：田静 孙杰 宁韩利 许中奇 杨明 

机构地区：[1]School of Computer and Communication Engineering,Tianjin University of Technology [2]School of Electronic Information Engineering,Tianjin University of Technology

出　　处：《Optoelectronics Letters》2011年第1期69-73,共5页光电子快报（英文版）

基　　金：supported by the Natural Science Foundation of Tianjin Municipal Science and Technology Commission (No. 06YFJMC15600)

摘　　要：During the 3D shape measurement,there are noises in the images that are obtained by the capture system.The traditional method,Fourier transform profilometry(FTP) technique,improves the accuracy only by the filtering method in the frequency domain.In this paper,the curve fitting method is used for the light field distribution calculation before the filtering process applied in the frequency domain by choosing a suitable filter window,and then the higher quality of the basic frequency component signal is got.This method can avoid the frequency overlapping caused by the noise,so the improvement of the measuring accuracy of FTP is realized.

关 键 词：Curve fitting Data handling Fourier transforms Frequency domain analysis Profilometry Three dimensional 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]