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基于3D视觉的风电塔筒焊缝检测系统设计 被引量:4
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作者 肖苏华 乔明娟 +4 位作者 赖南英 罗文斌 刘普京 曹应斌 王志勇 《电子测量与仪器学报》 CSCD 北大核心 2022年第2期122-130,共9页
为满足风电机组塔筒行业对焊缝外观质量缺陷检测高效性、精确性的需求,采用3D机器视觉技术研制了基于风电塔筒焊缝外观质量缺陷检测系统。首先,通过点云滤波、点云分割、点云精简对采集的点云数据进行预处理,确保后期缺陷评判的准确性;... 为满足风电机组塔筒行业对焊缝外观质量缺陷检测高效性、精确性的需求,采用3D机器视觉技术研制了基于风电塔筒焊缝外观质量缺陷检测系统。首先,通过点云滤波、点云分割、点云精简对采集的点云数据进行预处理,确保后期缺陷评判的准确性;其次,对三维数据进行轮廓切片化处理以及断点拟合处理,得到轮廓特性;再次,采用递归粗提取改进算法提取特征点,进行缺陷评判,获得焊缝外观缺陷检测结果;最后,根据系统焊缝缺陷评判流程及标准,选取典型的焊缝样板进行焊缝宽度、焊缝错边以及焊缝直线度测试,焊缝检测精度可达0.001 mm,速度为当前人工检测速度的3倍,检测结果表明,系统具备高准确性、高速度和高精度特性,能代替人工检测,具有良好的应用前景。 展开更多
关键词 机器视觉 风电塔筒 焊缝检测 高精密运动 点云处理
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Research and application of uniform material counting method based on machine vision
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作者 XIAO Suhua qiao mingjuan +3 位作者 WANG Zhiyong WANG Wei FU Youzhi GUO Shusen 《Optoelectronics Letters》 EI 2023年第2期123-128,共6页
Manufacturing and agricultural industries use manual methods to count materials. This leads to low accuracy and inefficiency. This paper proposes a secondary counting method that combines main and differential countin... Manufacturing and agricultural industries use manual methods to count materials. This leads to low accuracy and inefficiency. This paper proposes a secondary counting method that combines main and differential counting. The area-fill identification algorithm is applied to mark the counted materials. To verify the effectiveness of the proposed counting algorithm, numbers of countings are conducted for different materials, such as the screws, hole gaskets, beans, jujube, etc. The results show that the counting accuracy reaches 98% for materials with size of 2—20 mm. The method has delivered a high-efficiency and high-accuracy automatic intelligent counting, with a wide range of application prospects and reference value. 展开更多
关键词 uniform material counting method machine vision
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