3D measurement of dynamic structures using monocular camera

IF 9.6 1区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY

Automation in Construction Pub Date : 2025-05-06 DOI:10.1016/j.autcon.2025.106240

Ken Kobayashi, Takashi Fuse

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引用次数: 0

Abstract

Visual simultaneous localization and mapping technology assumes that the surrounding objects are stationary, making it inapplicable to dynamic objects. In environments with dynamic objects, accurately estimating their shape and displacement remains challenging. This paper develops a method for estimating the 3D shapes and displacements of dynamic objects using a monocular camera and demonstrates its effectiveness. The proposed technique uses semi-supervised video segmentation to separate dynamic objects of interest from others, extract and track features only for the object, and perform 3D reconstruction. Reconstructing these 3D point clouds in the camera space makes it possible to measure the 3D shape and displacement of a dynamic object. The method was validated on a video of a rotating fan blade, and the average relative absolute error of the position estimation was 0.0011, indicating sufficiently high accuracy. Hence, this approach highlights the possibility of accurately reconstructing dynamic environments using a monocular camera for infrastructure monitoring.

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单目相机动态结构的三维测量

视觉同步定位与映射技术假设周围物体是静止的，因此不适用于动态物体。在具有动态物体的环境中，准确估计其形状和位移仍然具有挑战性。本文提出了一种利用单目摄像机估计动态物体三维形状和位移的方法，并验证了该方法的有效性。该技术采用半监督视频分割，将感兴趣的动态对象与其他对象分离，提取和跟踪对象的特征，并进行3D重建。在相机空间中重建这些三维点云使得测量动态物体的三维形状和位移成为可能。在风机叶片旋转视频上进行了验证，位置估计的平均相对绝对误差为0.0011，具有较高的精度。因此，这种方法强调了使用单目摄像机进行基础设施监测准确重建动态环境的可能性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Automation in Construction 工程技术-工程：土木

CiteScore

19.20

自引率

16.50%

发文量

563

审稿时长

8.5 months

期刊介绍： Automation in Construction is an international journal that focuses on publishing original research papers related to the use of Information Technologies in various aspects of the construction industry. The journal covers topics such as design, engineering, construction technologies, and the maintenance and management of constructed facilities. The scope of Automation in Construction is extensive and covers all stages of the construction life cycle. This includes initial planning and design, construction of the facility, operation and maintenance, as well as the eventual dismantling and recycling of buildings and engineering structures.