测绘学报 ›› 2024, Vol. 53 ›› Issue (3): 548-557.doi: 10.11947/j.AGCS.2024.20220362

• 摄影测量学与遥感 • 上一篇    下一篇

相机位姿求解的复用镜像约束法

阿晓荟1, 李佳田1, 刘佳音1, 胡浩1, 贺日兴2,3, 陆美1, 段烨1   

  1. 1. 昆明理工大学国土资源工程学院, 云南 昆明 650093;
    2. 首都师范大学资源环境与旅游学院, 北京 100048;
    3. 首都师范大学三维数据获取与应用教育部重点实验室, 北京 100048
  • 收稿日期:2022-05-30 修回日期:2023-05-16 发布日期:2024-04-08
  • 通讯作者: 李佳田 E-mail:ljtwcx@163.com
  • 作者简介:阿晓荟(1995—),女,博士生,研究方向为摄影测量与遥感。E-mail:1665369329@163.com
  • 基金资助:
    国家自然科学基金(41561082)

Solving camera pose with multiplexing mirror constraint

A Xiaohui1, LI Jiatian1, LIU Jiayin1, HU Hao1, HE Rixing2,3, LU Mei1, DUAN Ye1   

  1. 1. Faculty of Land and Resources Engineering, Kunming University of Science and Technology, Kunming 650093, China;
    2. College of Resources Environment and Tourism, Capital Normal University, Beijing 100048, China;
    3. Key Laboratory of 3D Information Acquisition and Application, MOE, Capital Normal University, Beijing 100048, China
  • Received:2022-05-30 Revised:2023-05-16 Published:2024-04-08
  • Supported by:
    The National Natural Science Foundation of China (No. 41561082)

摘要: 针对参照物不在视场范围内的问题,提出一种复用镜像约束求解相机位姿的方法。具体步骤为:①依据相机位姿求解方法得到镜像相机位姿;②根据平面镜反射对称性构建单张图像镜像相机与相机位姿间线性约束关系;③复用镜像相机姿态,建立多张图像之间约束关系,在获得3张图像情况下,可得18个线性约束条件,提高相机位姿求解精度。试验结果表明:旋转矩阵和平移向量均误差分别为0.009°和1.866mm,较对比方法,旋转矩阵均误差平均降低0.009°,平移向量均误差平均降低2.292mm,且具有较强适应性。在真实试验中,平均重投影误差为0.492像素,优于对比方法,能够准确求解参照物不在视场范围内的相机位姿。

关键词: 相机位姿, 平面镜反射对称性, 镜像相机, 最小二乘

Abstract: Aiming at the problem that the reference object is not in the field of view, a method with constraints of mirror camera to solve camera pose is proposed.The steps are:① Mirror camera pose is solved by using the method of camera pose estimation. ② The linear constraint relationship between the pose of camera and single image mirror camera is constructed with mirror reflection symmetry. ③ To establish constraints between multiple images, the mirror camera poses were multiplexed, 18 linear constraints can be obtained using 3 images. This makes the accuracy of camera pose solution improved. Experiments show that:the errors of rotation matrix and translation vector are 0.009° and 1.866mm respectively, and the corresponding errors are reduced by 0.009°and 2.292mm on average, and has a strong adaptability. In real experiments, the average reprojection error is 0.492 pixels. This suggests that the method in this paper is better than the comparison methods, and the pose of the camera where the reference object is not in the field of view can be accurately solved.

Key words: camera pose, mirror reflection symmetry, mirror camera, least squares

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