Real-time full-field 3-D surface-shape measurement using off-the-shelf components and a single processor

Sixth International Conference on 3-D Digital Imaging and Modeling (3DIM 2007) Pub Date : 2007-08-21 DOI:10.1109/3DIM.2007.43

Peirong Jia, J. Kofman, C. English

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引用次数: 7

Abstract

Phase-shifting fringe-projection methods have been increasingly used for three-dimensional (3D) object surface modeling to permit full-field measurement. This paper presents a real-time full-field high-resolution 3D surface-shape measurement system implemented with an efficient 3D shape measurement pipeline and triangular-pattern phase-shifting based on off-the-shelf components, software synchronization and a single computer-processor. The system projects computer-generated fringe patterns with a triangular intensity profile onto an object via a Digital Light Processing (DLP) projector. The projected patterns are electronically shifted and a CCD camera synchronized with the DLP projector by software captures the images from another direction. The captured images are processed by a single computer to reconstruct the 3D shape using triangular-pattern phase-shifting algorithms, and the model is displayed in real time. The 3D shape acquisition system achieved a speed of 5.6 fps for an image size of 648times494 pixels using the two-step triangular-pattern phase-shifting method, without any hardware synchronization or dual processing.

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实时全方位三维表面形状测量使用现成的组件和单个处理器

相移条纹投影法已越来越多地用于三维(3D)物体表面建模，以允许全场测量。本文提出了一种基于现成组件、软件同步和单处理器的实时全场高分辨率三维曲面形状测量系统，该系统采用高效的三维形状测量管道和三角形相移技术实现。该系统通过数字光处理(DLP)投影仪将计算机生成的具有三角形强度轮廓的条纹图案投射到物体上。投影图案通过电子方式移动，CCD相机通过软件与DLP投影仪同步，从另一个方向捕获图像。采集到的图像经单台计算机处理后，采用三角形相移算法重建三维形状，并实时显示模型。该三维形状采集系统采用两步三角形移相法，在不需要硬件同步和双重处理的情况下，对648times494像素的图像实现了5.6 fps的速度采集。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Sixth International Conference on 3-D Digital Imaging and Modeling (3DIM 2007)

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