High-speed pattern projection for three-dimensional shape measurement using laser speckles

Martin Schaffer; Marcus Grosse; Richard Kowarschik

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High-speed pattern projection for three-dimensional shape measurement using laser speckles

机译：使用激光散斑进行三维形状测量的高速图案投影

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We propose a high-speed projection system that is able to project statistical speckle patterns at a rate of 500 Hz. Its purpose is to generate structured light for a real-time photogrammetry stereo vision setup. As conventional digital light projector (DLP) projection setups are limited in their maximum projection rate to 250 Hz for gray-value patterns, stripe projection systems are usually applied for real-time three-dimensional (3D) measurements. However, these techniques can only be used on steady surfaces as phase unwrapping has to be done. In contrast, the proposed setup is able to measure the shape of multiple spatially separated objects at once. We compare the speckle setup with a system using a DLP projector and with other fast 3D shape measurement setups, like the widely used stripe projection methods, qualitatively and quantitatively.

机译：我们提出了一种高速投影系统，该系统能够以500 Hz的速率投影统计散斑图。其目的是为实时摄影测量立体视觉设置生成结构化的光。由于常规的数字光投影仪（DLP）投影设置的最大投影速率对于灰度值模式限制为250 Hz，因此条纹投影系统通常应用于实时三维（3D）测量。但是，由于必须进行相位展开，因此这些技术只能在稳定的表面上使用。相反，建议的设置能够一次测量多个空间上分离的对象的形状。我们将斑点设置与使用DLP投影仪的系统以及其他快速3D形状测量设置（如广泛使用的条纹投影方法）进行定性和定量比较。

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《Applied optics》 |2010年第18期|共8页
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Martin Schaffer; Marcus Grosse; Richard Kowarschik;
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1. High-speed pattern projection for three-dimensional shape measurement using laser speckles [J] . Martin Schaffer, Marcus Grosse, Richard Kowarschik Applied optics . 2010,第18期

机译：使用激光散斑进行三维形状测量的高速图案投影
2. Random laser speckle pattern projection for non-contact vibration measurements using a single high-speed camera [J] . Pablo Etchepareborda, Marie-Helene Moulet, Manuel Melon Mechanical systems and signal processing . 2021,第Sepa期

机译：随机激光散斑图案投影，使用单个高速相机进行非接触式振动测量
3. High-speed scanning stroboscopic fringe-pattern projection technology for three-dimensional shape precision measurement [J] . Guowei Yang, Changku Sun, Peng Wang, Applied optics . 2014,第2期

机译：高速扫描频闪条纹图形投影技术，用于三维形状精度测量
4. Experimental comparison of laser speckle projection and array projection for high-speed 3-D measurements [C] . Stefan Heist, Peter Lutzke, Patrick Dietrich, Conference on optical measurement systems for industrial inspection IX . 2015

机译：激光散斑投影和阵列投影用于高速3-D测量的实验比较
5. Tomographic reconstruction of three-dimensional density fields using laser speckle photography and laser interferometry projections. [D] . Ko, Hanseo. 1998

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机译：夏威夷莫纳克亚恒星斑点模式的时空统计测量

High-speed pattern projection for three-dimensional shape measurement using laser speckles

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