An Improved Two-Stage Camera Calibration Method

Author

Gao, Hongwei ; Wu, Chengdong ; Gao, Lifu ; Li, Bin

Author_Institution

Shenyang Inst. of Autom., Chinese Acad. of Sci., Shenyang

Volume

2

fYear

0

fDate

0-0 0

Firstpage

9514

Lastpage

9518

Abstract

An improved two-stage camera calibration method was introduced. It took the sum of distance in the world coordinate between ground truth 3D points and calculated 3D points as cost function and made distortion coefficients of two cameras to be optimized at the same time. The 3D points´ coordinate were calculated by means of the triangular measure based on camera model with distortion and the imitated direct linear transformation measure respectively, two new corresponding parameters optimization algorithms were also put forward. Simulation and experiment were made for 3D reconstruction with the parameters obtained by the traditional and improved calibration methods and the results show that the improved methods have much higher calibration precision than that of the traditional ones

Keywords

calibration; cameras; image reconstruction; optical distortion; stereo image processing; 3D points; 3D reconstruction; camera calibration; camera model; cost function; direct linear transformation measure; distortion coefficients; lens distortion; parameter optimization; triangular measure; Calibration; Cameras; Cost function; Distortion measurement; Lenses; Optical distortion; Optimization methods; Robot kinematics; Robot vision systems; Robotics and automation; Camera calibration; Lens distortion; Parameter optimization; Triangular measure;

fLanguage

English

Publisher

ieee

Conference_Titel

Intelligent Control and Automation, 2006. WCICA 2006. The Sixth World Congress on

Conference_Location

Dalian

Print_ISBN

1-4244-0332-4

Type

conf

DOI

10.1109/WCICA.2006.1713845

Filename

1713845