| 基于灰度权重模型的激光条纹中心提取算法 |
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| 引用本文： | 黄凌锋,刘光东,张超,甘宏,罗文婷,李林.基于灰度权重模型的激光条纹中心提取算法[J].激光技术,2020,44(2):190-195. |
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| 作者姓名： | 黄凌锋 刘光东 张超 甘宏 罗文婷 李林 |
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| 作者单位： | 1.福建农林大学 交通与土木工程学院, 福州 350100 |
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| 基金项目： | 国家自然科学基金;国家重点研发计划 |
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| 摘 要： | 为了在多噪声环境中精确提取激光条纹中心,采用改进的灰度权重模型,提取激光条纹的亚像素中心。通过均值阈值法以及改进的灰度权重模型对3维激光成像系统采集的图像进行了处理,并与传统的算法进行对比。结果表明,该算法能够较为完整地提取激光条纹区域,并且其平均拟合相关系数为0.9809(最接近1),平均列坐标最大差值为0.4518pixel(最接近0),平均变异系数为0.0062(最接近0),相对其它方法具有更优的结果,能够抑制多噪声环境对于激光条纹提取的影响,精确提取激光条纹的亚像素中心,具有较好的鲁棒性。该算法为精确提取激光条纹的中心提供了参考。
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| 关 键 词： | 图像处理 激光条纹 灰度权重模型 亚像素中心 |
| 收稿时间： | 2019-05-27 |
Laser stripe center extraction algorithm based on gray weight model |
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| HUANG Lingfeng,LIU Guandong,ZHANG Chao,GAN Hong,LUO Wenting,LI Lin.Laser stripe center extraction algorithm based on gray weight model[J].Laser Technology,2020,44(2):190-195. |
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| Authors: | HUANG Lingfeng LIU Guandong ZHANG Chao GAN Hong LUO Wenting LI Lin |
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| Affiliation: | (Department of Transportation and Civil Engineering,Fujian Agricultural and Forestry University,Fuzhou 350100,China;Fujian Provincial Expressway Technology Consulting Co.Ltd.,Fuzhou 350100,China) |
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| Abstract: | In order to extract the center of laser stripe accurately in noisy environment, the improved gray-scale weight model was adopted to extract subpixel centers of laser fringes. The image acquired by 3-D laser imaging system was processed by means of mean threshold method and the improved gray weight model. The method was compared with the traditional algorithm. The results show that, the algorithm can extract laser fringe region more completely. The average fitting correlation coefficient is 0.9809 (closest to 1). The maximum difference of average column coordinates is 0.4518pixel (closest to 0). The average coefficient of variation is 0.0062 (closest to 0). Compared with other methods, it has better results. It can suppress the influence of multi-noise environment on laser stripe extraction and extract subpixel centers of laser fringes accurately. It has good robustness. The algorithm provides a reference for extracting the center of laser fringes accurately. |
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| Keywords: | image processing laser stripe gray weight model sub-pixel center |
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