航空学报 > 2025, Vol. 46 Issue (8): 331072-331072   doi: 10.7527/S1000-6893.2024.31072

面向投影增强现实跟踪定位器的稳定位姿估计与标定方法

赵西富1, 崔海华1(), 张益华1, 杨仁川1, 周家锐1, 彭凯2, 廖敏捷3   

  1. 1.南京航空航天大学 机电学院,南京 210016
    2.中国航发湖南动力机械研究所,株洲 412002
    3.中国航发南方工业有限公司,株洲 412000
  • 收稿日期:2024-08-19 修回日期:2024-10-16 接受日期:2024-11-25 出版日期:2024-12-06 发布日期:2024-12-05
  • 通讯作者: 崔海华 E-mail:cuihh@nuaa.edu.cn
  • 基金资助:
    中央高校基本科研业务费专项资金(56XCA2403107);中国航空发动机集团产学研合作项目(HFZL2022CXY006);南京航空航天大学研究生科研与实践创新计划(xcxjh20230512)

Stable pose estimation and calibration method for projection augmented reality tracking locator

Xifu ZHAO1, Haihua CUI1(), Yihua ZHANG1, Renchuan YANG1, Jiarui ZHOU1, Kai PENG2, Minjie LIAO3   

  1. 1.College of Mechanical and Electrical Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China
    2.China Aero Engine Corporation Hunan Power Machinery Research Institute,Zhuzhou 412002,China
    3.China Aero Engine South Industries Co. ,Ltd. ,Zhuzhou 412000,China
  • Received:2024-08-19 Revised:2024-10-16 Accepted:2024-11-25 Online:2024-12-06 Published:2024-12-05
  • Contact: Haihua CUI E-mail:cuihh@nuaa.edu.cn
  • Supported by:
    Special Funds for Basic Scientific Research Operating Expenses of Central Universities(56XCA2403107);China Aviation Industry Corporation Industry-University-Research Cooperation Project(HFZL2022CXY006);Nanjing University of Aeronautics and Astronautics Graduate Research and Practice Innovation Program(xcxjh20230512)

摘要:

为了克服传统原位投影增强现实(PAR)系统在遮挡、受限空间中的投影局限性,设计并实现了一种基于跟踪的PAR装配辅助系统。首先,针对系统构建中存在的中转靶标定位问题,借用点对特征(PPF)中“整体建模,局部匹配”的思想,提出了一种基于投票的中转靶标定位算法。然后,针对中转靶标和投影仪之间的位姿标定问题,提出了一种基于多站位耦合的中转位姿标定算法,利用Kronecker积简化位姿模型,并通过构造拉格朗日方程进行求解。最后,通过开展中转靶标定位稳定性试验以及中转位姿标定试验验证了所提算法的有效性。通过在飞机机头舱段场景中进行投影定位试验,验证了系统的灵活性,也说明该系统框架可以有效地扩展PAR系统的应用范围。

关键词: 投影增强现实, 装配辅助, 投票机制, 位姿估计, 迭代方法

Abstract:

To overcome the projection limitations of traditional in-situ Projection Augmented Reality (PAR) systems in occlusion and restricted spaces, a tracking-based PAR assembly assistance system is designed and implemented. Firstly, in view of the transfer target positioning problem existing in system construction, a transfer target positioning algorithm based on voting is proposed by borrowing the idea of “model globally, match locally” from Point Pair Features (PPF). In addition, in view of the pose calibration problem between the transfer target and the projector, a transfer pose calibration algorithm based on multi-station coupling is proposed. The pose model is simplified by using Kronecker product and solved by constructing Lagrangian equations. Finally, the effectiveness of the proposed algorithm is verified by conducting transfer target positioning stability tests and transfer pose calibration tests. The flexibility of the system is verified by conducting projection positioning tests in the aircraft nose cabin scene. It is shown that the system framework can effectively expand the application scope of the PAR system.

Key words: projection augmented reality, assembly assistance, voting mechanism, pose estimation, iterative method

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