3-D object shapes measurement used by Fourier Transform Profilometry

• Main Authors: Chen Chi Lin, 林振祺
• Other Authors: T.W.Chang
• Format: Others
• Language: zh-TW
• Published: 2003
• Online Access: http://ndltd.ncl.edu.tw/handle/56944884105440333571

碩士 === 長庚大學 === 半導體科技研究所 === 91 === Optical measurement technologies have been developed for several years, most popular one is Moiré Topography, but in some places, it will not work out cause Moiré Topography’s drawbacks like the sensitivity is fixed at and needed to assign the fringe’s order………etc, which limit the using ranges. To measure more powerful, the following scientists develop and publish many new measurement technologies. What we talk about in this thesis is one of them, called FTP(Fourier Transform Profilometry). FTP is a new tech based on computer processing automatic measurement, which only needs one fringe pattern image to recover the original object shapes profile, we say that it saves many time and energy, especially in the condition that the environment is not steady. We can make readers getting closed to the FTP structure, understanding FTP’s theory development by experiment. And we will introduce the problem we met when trying to digitalize the continue wave signals and how it overcome