测绘学报 ›› 2024, Vol. 53 ›› Issue (6): 1025-1036.doi: 10.11947/j.AGCS.2024.20230447

• 智能化测绘 • 上一篇    下一篇

多视影像三维线云重建技术及其智能化发展展望

魏东(), 刘欣怡(), 张永军   

  1. 武汉大学遥感信息工程学院,湖北 武汉 430079
  • 收稿日期:2023-09-30 发布日期:2024-07-22
  • 通讯作者: 刘欣怡 E-mail:weidong@whu.edu.cn;liuxy0319@whu.edu.cn
  • 作者简介:魏东(1992—),男,博士后,主要从事三维线云重建与应用研究。 E-mail:weidong@whu.edu.cn
  • 基金资助:
    国家自然科学基金青年项目(42301499);博士后创新人才支持计划(Bx20220241)

The technology and intelligent development of 3D line cloud reconstruction from multiple images

Dong WEI(), Xinyi LIU(), Yongjun ZHANG   

  1. School of Remote Sensing and Information Engineering, Wuhan University, Wuhan 430079, China
  • Received:2023-09-30 Published:2024-07-22
  • Contact: Xinyi LIU E-mail:weidong@whu.edu.cn;liuxy0319@whu.edu.cn
  • About author:WEI Dong (1992—), male, postdoctor, majors in 3D line cloud reconstruction and applied research. E-mail: weidong@whu.edu.cn
  • Supported by:
    The Youth Program of the National Natural Science Foundation of China(42301499);China National Postdoctoral Programme for Innovative Talents under Grant(Bx20220241)

摘要:

三维线云是具有几何结构与语义信息的三维线段集合,可以作为实景三维构建中高效的引导,控制与抽象表达元素,弥补点云的边缘描述缺陷与初始结构的缺失,是改变传统三维模型“一张皮”(不同对象相互粘连,难以指导空间分析与决策)的重要结构化特征。然而,如何从多视影像中重建好用的线云,将线云在实景三维中用好,一直是本领域的难点问题。本文回顾三维线云的发展,介绍相关的重建方法,分析存在的难点与不足;结合从数字化走向智能化的测绘科技转型背景,论述线云在实景三维中建什么,如何建与怎么用,对线云重建和应用的智能化发展予以介绍和展望,希望为实景三维重建与线云研究的相关人员提供参考。

关键词: 三维线云, 实景三维, 三维重建, 智能化测绘, 多视影像

Abstract:

As a collection of line segments, 3D line clouds shave distinct geometric structures and semantic information in each individual feature. They can serve as efficient guiding, controlling, and abstract representation elements in structured 3D reconstruction, compensating for the deficiencies in edge description and lack of initial structure in point clouds. These line clouds represent important structured features that can change the traditional “one-layer skin” 3D model (where different objects are mutually adherent, making spatial analysis and decision-making difficult). However, how to reconstruct useful line clouds from multi-view images and make effective use of them has always been a challenging problem in this field. This article reviews the development of 3D line clouds, introduces related reconstruction methods, and analyzes existing difficulties and shortcomings. Combining the background of transformation from digitization to intelligent surveying and mapping technology, it discusses the three questions of what to build, how to build, and how to use line clouds in real-world 3D scenarios. The article also introduces and prospects the intelligent development of line cloud reconstruction and application, hoping to provide a reference for researchers working on real 3D reconstruction and line clouds.

Key words: 3D line clouds, 3D realistic scene, 3D reconstruction, intelligent surveying and mapping, multiple images

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