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首页> 外文期刊>Optical engineering >Fast phase unwrapping algorithm based on region partition for structured light vision measurement
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Fast phase unwrapping algorithm based on region partition for structured light vision measurement

机译：基于区域分割的快速相位展开算法用于结构化视觉检测

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摘要

Phase unwrapping is a key problem of phase-shifting profilometry vision measurement for complex object surface shapes. The simple path-following phase unwrapping algorithm is fast but has serious unwrapping error for complex shapes. The Goldstein+flood phase unwrapping algorithm can handle some complex shape object measurement; however, it is time consuming. We propose a fast phase unwrapping algorithm based on region partition according to a quality map of wrapped phase. In this algorithm, wrapped phase image is divided into several regions using partition thresholds, which are determined according to histogram of quality value. Each region is unwrapped by using a simple path-following phase algorithm and several groups with different priorities are generated. These groups are merged according to their priorities from high to low order and a final absolute phase is obtained. The proposed method is applied to wrapped phase images of three objects with and without noise. Experiments show that the proposed method is much faster, more accurate, and robust to noise than the Goldstein+flood algorithm in unwrapping complex phase image.
机译：相位展开是复杂物体表面形状的相移轮廓测量视觉测量的关键问题。简单的路径跟随相位展开算法速度很快，但是对于复杂形状却存在严重的展开错误。 Goldstein + Flood相展开算法可以处理一些复杂的形状对象测量；但是，这很耗时。根据包裹相位的质量图，提出了一种基于区域划分的快速相位展开算法。在该算法中，使用分割阈值将包裹的相位图像分为几个区域，这些阈值是根据质量值的直方图确定的。通过使用简单的路径跟随阶段算法来展开每个区域，并生成具有不同优先级的几个组。这些组根据其优先级从高到低进行合并，并获得最终的绝对阶段。该方法适用于有噪声和无噪声的三个物体的包裹相位图像。实验表明，在展开复杂相位图像时，该方法比Goldstein + flood算法更快，更准确且对噪声更强。

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  • 来源
    《Optical engineering》 |2014年第4期|044103.1-044103.10|共10页
  • 作者

    Jun Lu; Hang Su;

  • 作者单位

    Harbin Engineering University, College of Automation, 145 Nantong Street, Harbin 150001, China;

    Harbin Engineering University, College of Automation, 145 Nantong Street, Harbin 150001, 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

    structure light; phase-shifting profilometry; phase unwrapping; quality map;

    机译：结构光相移轮廓仪相位展开质量图;

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