Study on the initial value for the exterior orientation of the mobile version

Zhi-jing Yu; Shi-liang Li

doi:10.1117/12.913471

1 October 2011 Study on the initial value for the exterior orientation of the mobile version

Zhi-jing Yu, Shi-liang Li

Proceedings Volume 8285, International Conference on Graphic and Image Processing (ICGIP 2011); 82856D (2011) https://doi.org/10.1117/12.913471
Event: 2011 International Conference on Graphic and Image Processing, 2011, Cairo, Egypt

Abstract

Single mobile vision coordinate measurement system is in the measurement site using a single camera body and a notebook computer to achieve three-dimensional coordinates. To obtain more accurate approximate values of exterior orientation calculation in the follow-up is very important in the measurement process. The problem is a typical one for the space resection, and now studies on this topic have been widely conducted in research. Single-phase space resection mainly focuses on two aspects: of co-angular constraint based on the method, its representatives are camera co-angular constraint pose estimation algorithm and the cone angle law; the other is a direct linear transformation (DLT). One common drawback for both methods is that the CCD lens distortion is not considered. When the initial value was calculated with the direct linear transformation method, the distribution and abundance of control points is required relatively high, the need that control points can not be distributed in the same plane must be met, and there are at least six non- coplanar control points. However, its usefulness is limited. Initial value will directly influence the convergence and convergence speed of the ways of calculation. This paper will make the nonlinear of the total linear equations linearized by using the total linear equations containing distorted items and Taylor series expansion, calculating the initial value of the camera exterior orientation. Finally, the initial value is proved to be better through experiments.

Citation Download Citation

Zhi-jing Yu and Shi-liang Li "Study on the initial value for the exterior orientation of the mobile version", Proc. SPIE 8285, International Conference on Graphic and Image Processing (ICGIP 2011), 82856D (1 October 2011); https://doi.org/10.1117/12.913471

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KEYWORDS

Cameras

Distortion

Imaging systems

Calibration

Charge-coupled devices

Computing systems

Precision calibration

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