基于搭桥式点云拼接的管道三维重建研究
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南京航空航天大学自动化学院 南京 211106

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TP391

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国家自然科学基金(62073161)项目资助


Research on 3D reconstruction of pipe based on bridge-type point cloud matching
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College of Automation Engineering, Nanjing University of Aeronautics and Astronautics,Nanjing 211106, China

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    摘要:

    针对现有管道三维重建方法依赖于管道内壁结构、纹理特征的问题,提出了基于合作目标与单目视觉的搭桥式点云拼接方法,实现管道内壁三维重建,该方法不依赖管道内壁的任何结构纹理特征,拼接速度快,且不受点云规模的影响。同时,设计了高精度的同心圆合作目标,用于计算点云的高精度拼接位姿,其位姿解算精度可达0.02 mm,相比椭圆合作目标高出53%,并实现了合作目标的鲁棒识别算法、以及拥有旋转不变性的特征点排序算法。最后,利用ROS机器人,搭建了不依赖任何特征的管道三维重建系统,并在实际实验中,完成了拼接精度为0.02 mm的管道整体三维重建。

    Abstract:

    Aiming at the problem that the existing 3D reconstruction methods for pipe depend on target′s structure and texture characteristics, this paper proposed a bridge-type point cloud matching method based on cooperative objective and monocular vision to realize 3D reconstruction of pipe. The method does not depend on any structure and texture characteristics of the pipe, and has faster matching speed, and is not affected by the scale of the point cloud. At the same time, a high-precision cooperative objective based on concentric circle is designed, which is used to calculate the high-precision matching pose of the point cloud. The accuracy of the pose can reach 0.02 mm, which is 53% higher than that of the elliptical cooperative objective. Simultaneously, the robust recognition algorithm of the cooperative objective and the ranking algorithm for feature points with rotation invariance are realized. Finally, using ROS robot, a 3D reconstruction system of pipe without any features was built, and in actual experiments, the overall 3D reconstruction of the pipe with a matching accuracy of 0.02 mm was completed.

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伍凡,沙俊伟,刘若鹏,徐贵力.基于搭桥式点云拼接的管道三维重建研究[J].电子测量技术,2023,46(21):151-158

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  • 在线发布日期: 2024-03-04
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