主管：中华人民共和国应急管理部
主办：应急管理部天津消防研究所
ISSN 1009-0029  CN 12-1311/TU
消防科学与技术

消防科学与技术 ›› 2026, Vol. 45 ›› Issue (3): 136-141.

• • 上一篇    下一篇

基于火场三维重构的视频光影模型构建与分析技术

刘一乐1, 王鑫2, 王晓军2, 韩冲2   

  1. （1.鄂州市消防救援支队，湖北 鄂州 436000； 2.应急管理部天津消防研究所，天津 300381）
  • 收稿日期:2025-02-08 修回日期:2025-02-24 出版日期:2026-03-15 发布日期:2026-03-15
  • 作者简介:刘一乐，湖北省鄂州市消防救援支队，中级专业技术职务，硕士，主要从事火灾调查方面的研究，湖北省鄂州市寿昌大道18号，436000，452633336@qq.com。
  • 基金资助:
    国家消防救援局科技计划项目（2023XFCX23）

Construction and analysis technology of video light and shadow model based on fire scene 3D reconstruction

Liu Yile1, Wang Xin2, Wang Xiaojun2, Han Chong2   

  1. (1. Ezhou Fire and Rescue Division, Ezhou Hubei 436000, China; 2. Tianjin Fire Science and Technology Research Institute of MEM, Tianjin 300381, China)
  • Received:2025-02-08 Revised:2025-02-24 Online:2026-03-15 Published:2026-03-15

摘要： 为探索通过视频光影分析确定起火点的有效方法，选取典型火灾视频光影分析案例，提取对称反光、立体遮挡、光影分割线几何计算等通用光影分析模型原理，设计实景验证试验，结合真实案例验证其确定起火点的有效性；设计三维重构光影分析模拟试验，利用Unreal Engine 5对火灾现场进行三维重构，采用模型辅助线法或模拟光源位置试错法进行模拟测试，验证其确定起火点的有效性。研究可为基层火灾调查人员提供实用参考，助力提升火灾调查效率与准确性。

关键词: 视频光影分析, 三维重构, 起火点, 火灾调查

Abstract: In order to explore effective methods for determining the fire origin through video light and shadow analysis, this paper selects typical cases of fire video light and shadow analysis, extracts the principles of general light and shadow analysis models such as symmetric reflection, three-dimensional occlusion, and geometric calculation of light and shadow dividing lines. A real-scene verification experiment is designed, and its effectiveness in determining the fire origin is verified by combining with real cases. A three-dimensional reconstruction light and shadow analysis simulation experiment is designed. Unreal Engine 5 is used to perform three-dimensional reconstruction of the fire scene, and simulation tests are carried out by using the model auxiliary line method or the simulated light source position trial-and-error method to verify its effectiveness in determining the fire origin. The study can provide practical reference for grass-roots fire investigators, helping to improve the efficiency and accuracy of fire investigation.

Key words: video light and shadow analysis, 3D reconstruction, fire origin, fire investigation