激光与光电子学进展, 2019, 56 (4): 041102, 网络出版: 2019-07-31
基于结构光多频相移法的煤块表面形貌测量 下载: 982次
Surface Profile Measurement of Coal Based on Structured Light Multifrequency Phase-Shifting Technique
成像系统 相位校正 多频相移 煤块 结构光测量 imaging systems phase correction multifrequency phase-shifting coal structured light measurement
摘要
提出了一种基于结构光多频相移法的相位校正算法。基于相位梯度,建立可靠度判据,将煤块有效测量区域内的相位点分成两类,并依次对其进行校正。实验分析了所提结构光投影算法的适用性,并测量该算法的精度。实验结果表明,所提方法较好地解决了煤块表面形貌测量中无效相位点的问题。
Abstract
A phase correction algorithm is proposed based on the structured light multifrequency phase-shifting technique. The phase points in the effective measurement area of coal are divided into two types and corrected in turn according to the reliability criterion constructed based on phase gradient. The applicability and measurement accuracy of the proposed algorithm are tested experimentally. The experimental results show that the proposed algorithm can be used to well resove the problem of invalid phase points occurred during the surface profile measurement of coal.
吴庆尉, 范海东, 关键, 吴迎春, 吴学成. 基于结构光多频相移法的煤块表面形貌测量[J]. 激光与光电子学进展, 2019, 56(4): 041102. Qingwei Wu, Haidong Fan, Jian Guan, Yingchun Wu, Xuecheng Wu. Surface Profile Measurement of Coal Based on Structured Light Multifrequency Phase-Shifting Technique[J]. Laser & Optoelectronics Progress, 2019, 56(4): 041102.