Paper Info
Title
Efficient generic calibration method for general cameras with single centre of projection
Abstract
Generic camera calibration is a non-parametric calibration technique that is applicable to any type of vision sensor. However, the standard generic calibration method was developed such that both central and non-central cameras can be calibrated within the same framework. Consequently, existing parametric calibration techniques cannot be applied for the common case of cameras with a single centre of projection (e.g. pinhole, fisheye, hyperboloidal catadioptric). This paper proposes improvements to the standard generic calibration method for central cameras that reduce its complexity, and improve its accuracy and robustness. Improvements are achieved by taking advantage of the geometric constraints resulting from a single centre of projection in order to enable the application of established pinhole calibration techniques. Input data for the algorithm is acquired using active grids, the performance of which is characterised. A novel linear estimation stage is proposed that enables a well established pinhole calibration technique to be used to estimate the camera centre and initial grid poses. The proposed solution is shown to be more accurate than the linear estimation stage of the standard method. A linear alternative to the existing polynomial method for estimating the pose of additional grids used in the calibration is demonstrated and evaluated. Distortion correction experiments are conducted with real data for both an omnidirectional camera and a fisheye camera using the standard and proposed methods. Motion reconstruction experiments are also undertaken for the omnidirectional camera. Results show the accuracy and robustness of the proposed method to be improved over those of the standard method.
Year
DOI
Venue
2010
10.1016/j.cviu.2009.05.005
Computer Vision and Image Understanding
Keywords
Field
DocType
pose estimation,catadioptric,pinhole calibration technique,omnidirectional camera,established pinhole calibration technique,single centre,standard generic calibration method,generic calibration,standard method,generic camera calibration,non-parametric calibration technique,parametric calibration technique,general camera,general model,efficient generic calibration method,camera calibration,image sensors,optoelectronics,detectors,calibration,generic algorithm
Computer vision,Image sensor,Computer science,Pose,Robustness (computer science),Catadioptric sensor,Camera resectioning,Artificial intelligence,Genetic algorithm,Calibration,Catadioptric system
Journal
Volume
Issue
ISSN
114
2
Computer Vision and Image Understanding
ISBN
Citations 
PageRank 
978-1-4244-1631-8
9
0.51
References 
Authors
25
3
Name
Order
Citations
PageRank
Aubrey K. Dunne1150.97
John Mallon2977.88
Paul F. Whelan356139.95