Automatic Chessboard Detection for Intrinsic and Extrinsic Camera Parameter Calibration

Sensors

Arturo de la Escalera¹ 

关键词: camera calibration;    chessboard detection;    pattern recognition;    double Hough transform;   

DOI  :  10.3390/s100302027

来源: mdpi

【 摘 要 】

There are increasing applications that require precise calibration of cameras to perform accurate measurements on objects located within images, and an automatic algorithm would reduce this time consuming calibration procedure. The method proposed in this article uses a pattern similar to that of a chess board, which is found automatically in each image, when no information regarding the number of rows or columns is supplied to aid its detection. This is carried out by means of a combined analysis of two Hough transforms, image corners and invariant properties of the perspective transformation. Comparative analysis with more commonly used algorithms demonstrate the viability of the algorithm proposed, as a valuable tool for camera calibration.

【 授权许可】

CC BY   
© 2010 by the authors; licensee Molecular Diversity Preservation International, Basel, Switzerland.