Stripe boundary codes for real-time structured-light range scanning of moving objects

Olaf A. Hall-Holt, S. Rusinkiewicz
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引用次数: 266

Abstract

We present a novel approach to real-time structured light range scanning. After an analysis of the underlying assumptions of existing structured light techniques, we derive a new set of illumination patterns based on coding the boundaries between projected stripes. These stripe boundary codes allow range scanning of moving objects, with only modest assumptions about scene continuity and reflectance. We describe an implementation that integrates these new codes with real-time algorithms for tracking stripe boundaries and determining depths. Our system uses a standard video camera and DLP projector, and produces dense range images at 60 Hz with 100 /spl mu/m accuracy over a 10 cm working volume. As an application, we demonstrate the creation of complete models of rigid objects: the objects are rotated in front of the scanner by hand, and successive range images are automatically aligned.
运动物体实时结构光距离扫描的条纹边界码
我们提出了一种实时结构光扫描的新方法。在分析了现有结构光技术的基本假设之后,我们基于对投影条纹之间的边界进行编码,得出了一套新的照明模式。这些条纹边界代码允许对移动物体进行范围扫描,仅对场景连续性和反射率进行适度假设。我们描述了一个将这些新代码与实时算法集成的实现,用于跟踪条纹边界和确定深度。我们的系统使用标准摄像机和DLP投影仪,在10厘米的工作体积内以60 Hz的频率产生密度范围图像,精度为100 /spl mu/m。作为一个应用,我们演示了刚性物体的完整模型的创建:物体在扫描仪前用手旋转,连续的距离图像自动对齐。
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