Error Analysis and Camera Parameter Design Method for 3D Reconstruction of a Space Target

被引：0
|
作者：
Tian Y. [1 ]
Song X. [2 ]
Wang Y. [3 ]
机构：
[1] Deep Space Research Center, Harbin Institute of Technology, Harbin
[2] School of Electronics and Information Engineering, Harbin Institute of Technology, Harbin
[3] Shanghai Institute of Space Systems Engineering, Shanghai
来源：
Yuhang Xuebao/Journal of Astronautics | 2019年 / 40卷 / 08期
关键词：
Camera network design; Error analysis; Space target; Three-dimensional reconstruction;
D O I：
10.3873/j.issn.1000-1328.2019.08.011
中图分类号：
学科分类号：
摘要：
Aiming at the space object three-dimensional reconstruction mission, a camera parameter design method is proposed in this study. The source and propagation of three-dimensional reconstruction error is investigated, which leads to a treatment that attributes the error propagation process into two sub-processes, which are the effect of the camera internal parameter over homogeneous coordinates of feature points and that of homogeneous coordinates over the reconstruction accuracy, respectively. Then, a three-dimensional reconstruction error estimation method is introduced. Based on the error lower-bound analysis and calculation results, the relationship between camera network and reconstruction error is summarized, which can be regarded as a camera network design principle. Thirdly, camera focal length and pixel size selection method based on 3D reconstruction accuracy metric is given to establish the framework of camera internal parameter design. A numerical simulation is carried out, where a synthesized space object is used to verify the effectiveness of the reconstruction error estimation algorithm and the framework of camera internal parameter as well as camera network design method. © 2019, Editorial Dept. of JA. All right reserved.
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页码：948 / 956
页数：8
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