Improved Camera Calibration Method Based on a Two-Dimensional Template

Authors:
Carlos Ricolfe-Viala;Antonio-Jose Sanchez-Salmeron
Affiliations:
Polytechnic University of Valencia, Camino de Vera s/n, 46120, Valencia, Spain;Polytechnic University of Valencia, Camino de Vera s/n, 46120, Valencia, Spain
Venue:
IbPRIA '07 Proceedings of the 3rd Iberian conference on Pattern Recognition and Image Analysis, Part II
Year:
2007

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Abstract

Camera calibration is necessary to obtain 3D information from 2D images of a scene. Different techniques exist which are based on photo-grammetry or self-calibration. As a result of the calibration the intrinsic and extrinsic camera parameters are computed. A lot of work has been done in camera calibration and also in data pre- and post-processing techniques. From a practical point of view, it is quite difficult to decide which calibration method produces the best results and even whether any data processing at all is necessary.This paper defines the best performance camera calibration algorithm. Based on the state of the art of all camera calibration processes, including pre- and post-processing data, a camera calibration method is chosen on the grounds of robustness and ease of handing. After, the calibration method is improved adding pre- and post-processing statements. Data treatment reduces the noise of the measurements and optimum performance is thus achieved. Its performance is tested with both simulated and real data and best results are always computed. The aim is to define a complete method which will allow all camera calibration situations to be easily resolved.