This paper is concerned with the problem of estimating the relative orientation between an inertial measurement unit(IMU) and a camera. Unlike most existing IMU-camera calibrations, the main challenge in this paper is...This paper is concerned with the problem of estimating the relative orientation between an inertial measurement unit(IMU) and a camera. Unlike most existing IMU-camera calibrations, the main challenge in this paper is that the information output from the IMU is incomplete. For example, only two tilt information can be read from the gravity sensor of a smart phone. Despite incomplete inertial information, there are strong restrictions between the IMU and camera coordinate systems. This paper addresses the incomplete information based IMUcamera calibration problem by exploiting the intrinsic restrictions among the coordinate transformations. First,the IMU transformation between two poses is formulated with the unknown IMU information. Then the defective IMU information is restored using the complementary visual information. Finally, the Levenberg-Marquardt(LM)algorithm is applied to estimate the optimal calibration result in noisy environments. Experiments on both synthetic and real data show the validity and robustness of our algorithm.展开更多
基金This work is supported by National Natural Science Foundation of China (NSFC, No. 61340046), National High Technology Research and Development Program of China (863 Program, No. 2006AA04Z247), Scientific and Technical Innovation Commission of Shenzhen Municipality (JCYJ20130331144631730, JCYJ20130331144716089), Specialized Research Fund for the Doctoral Program of Higher Education (No. 20130001110011).
基金This work is supported by the National Natural Science Foundation of China (NSFC, nos. 61340046), the National High Technology Research and Development Programme of China (863 Programme, no. 2006AA04Z247), the Scientific and Technical Innovation Commission of Shenzhen Munici-pality (nos. JCYJ20130331144631730), and the Specialized Research Fund for the Doctoral Programme of Higher Edu- cation (SRFDP, no. 20130001110011).
基金Project supported by the National Natural Science Foundation of China(Nos.61340046,60875050,and 60675025)the National High-Tech R&D Program(863) of China(No.2006AA04Z247)+1 种基金the Science and Technology Innovation Commission of Shenzhen Municipality(Nos.JCYJ20120614152234873,CXC201104210010A,JCYJ20130331144631730,and JCYJ20130331144716089)the Specialized Research Fund for the Doctoral Programme of Higher Education of China(No.20130001110011)
文摘This paper is concerned with the problem of estimating the relative orientation between an inertial measurement unit(IMU) and a camera. Unlike most existing IMU-camera calibrations, the main challenge in this paper is that the information output from the IMU is incomplete. For example, only two tilt information can be read from the gravity sensor of a smart phone. Despite incomplete inertial information, there are strong restrictions between the IMU and camera coordinate systems. This paper addresses the incomplete information based IMUcamera calibration problem by exploiting the intrinsic restrictions among the coordinate transformations. First,the IMU transformation between two poses is formulated with the unknown IMU information. Then the defective IMU information is restored using the complementary visual information. Finally, the Levenberg-Marquardt(LM)algorithm is applied to estimate the optimal calibration result in noisy environments. Experiments on both synthetic and real data show the validity and robustness of our algorithm.
基金the National Natural Science Foundation of China (No. 60675025), the National High-Tech R&D Program (863) of China (No. 2006AA04Z247), the Scientific and Tech- nical Innovation Commission of Shenzhen Municipality, China (Nos. JCYJ20130331144631730 and JCYJ20130331144716089), and the Specialized Research Fund for the Doctoral Program of Higher Education, China (No. 20130001110011)