Iwata Koichi, Sando Yusuke, Satoh Kazuo, Moriwaki Kousuke
Lumino, Kawachi-Nagano, Osaka, Japan. k‐
Appl Opt. 2011 Sep 10;50(26):5115-21. doi: 10.1364/AO.50.005115.
The theory of generalized grating imaging for a one-dimensional grating is applied to a pattern projection system in pattern projection profilometry. Contrast of the projected grating image is calculated under various conditions. The results help to determine the conditions suitable for obtaining high contrast grating images in a large space. Although the gratings required for the profilometry are hexagonal, the theory for two-dimensional gratings is prohibitively complex. Therefore, the projection system was designed using the one-dimensional theory. The projection system using two-dimensional hexagonal gratings was constructed and experiments were done with it. The result agrees approximately with the theoretical calculations for one-dimensional gratings. This suggests that the one-dimensional theory may be used for estimating the approximated behavior for hexagonal gratings for use in pattern projection profilometry. Some discussions are given for the application of the projection system for profiling the mannequin or human body.
一维光栅的广义光栅成像理论被应用于图案投影轮廓术中的图案投影系统。在各种条件下计算投影光栅图像的对比度。这些结果有助于确定在大空间中获得高对比度光栅图像的合适条件。尽管轮廓术所需的光栅是六边形的，但二维光栅的理论过于复杂。因此，投影系统是根据一维理论设计的。构建了使用二维六边形光栅的投影系统并进行了实验。结果与一维光栅的理论计算大致相符。这表明一维理论可用于估计图案投影轮廓术中六边形光栅的近似行为。对该投影系统用于人体模型或人体轮廓测量的应用进行了一些讨论。
