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首页> 外文期刊>Optical engineering >Real-time range imaging system based on a light-emitting diode array phase-shift range finder for fast three-dimensional shape acquisition
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Real-time range imaging system based on a light-emitting diode array phase-shift range finder for fast three-dimensional shape acquisition

机译：基于发光二极管阵列相移测距仪的实时距离成像系统，用于快速三维形状采集

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摘要

A high-resolution, real-time range imaging system based on a LED array phase-shift range finder was developed to measure three-dimensional surface profiles. The range image is captured by a time-division scanning LED array heterodyne phase-shift range finder. The phase measurement used for obtaining depth is implemented by using the fast "four-bucket" algorithm. The design of a fast automatic gain control circuit obviously reduces the feedback response time and improves system measurement speed. Experimental tests for evaluation of the imaging system performance are described. Based on the theoretical analysis, a simplified signal-to-noise ratio model is proposed for guiding the design of this imaging system. Last, some issues requiring attention on constructing a large-pixel version of the system are also discussed. It was found that the range images can be acquired at a rate of 10 frames per second with a depth resolution better than ±5 mm in the range of 50 to 1000 mm.
机译：开发了基于LED阵列相移测距仪的高分辨率实时范围成像系统，以测量三维表面轮廓。通过时分扫描LED阵列外差相移测距仪捕获距离图像。用于获取深度的相位测量是通过使用快速的“四桶”算法实现的。快速自动增益控制电路的设计明显减少了反馈响应时间，并提高了系统测量速度。描述了评估成像系统性能的实验测试。在理论分析的基础上，提出了一种简化的信噪比模型，指导该成像系统的设计。最后，还讨论了在构建系统的大像素版本时需要注意的一些问题。已经发现，可以以每秒10帧的速率获取距离图像，其深度分辨率在50至1000 mm的范围内优于±5 mm。

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  • 来源
    《Optical engineering》 |2010年第7期|p.073201.1-073201.9|共9页
  • 作者

    Huanqin Wang; Tianpeng Zhao; Hai Ming; Deyi Kong;

  • 作者单位

    Institute of Intelligent Machines, Chinese Academy of Sciences (IIM-CAS) The State Key Laboratory of Transducer Technology Hefei, 230031, China;

    University of Science and Technology of China Department of Physics Hefei 230026, China;

    University of Science and Technology of China Department of Physics Hefei 230026, China;

    Institute of Intelligent Machines, Chinese Academy of Sciences (IIM-CAS) The State Key Laboratory of Transducer Technology Hefei, 230031, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    range imaging; 3-D shape acquisition; LED array; phase-shift range finder; four-bucket algorithm;

    机译：范围成像;3-D形状获取;LED阵列相移测距仪四桶算法;

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