Verification method for measuring accuracy of shape center location of target by using CCD camera

In order to verify the measuring accuracy of the shape center location of the target by using CCD camera, a novel method was proposed in this paper as making use of testing the distance error from the feature points to the shape center location of target image plane indirectly. The measuring principle of testing the shape center location of target based on CCD camera was introduced. In order to extract coordinate values of the shape center location and feature points of target conveniently, the LED sources were installed at the corresponding positions of simulated target. According to the corresponding relation between the target and the image coordinates, the data processing methods of verificatng the measuring accuracy of shape center location were given. The experiments were repeated twice. The results of measuring accuracy of shape center location are σA1=0.037 mrad, σE1=0.021 mrad, σA2=0.032 mrad, σE2= 0.015 mrad, and two experimental results are basically identical. The results show that the method of verify the measuring accuracy of shape center location of target using CCD camera is evaluated exactly and conveniently. ©, 2015, Chinese Society of Astronautics. All right reserved.