Title :
Geometric Interpretations of the Relation between the Image of the Absolute Conic and Sphere Images
Author :
Ying, Xianghua ; Zha, Hongbin
Author_Institution :
National Lab. on Machine Perception, Peking Univ., Beijing
Abstract :
A spherical object has been introduced into camera calibration for several years through utilizing the properties of an image conic, which is the projection of the occluding contour of a sphere in the perspective image. However, in literature, only an algebraic interpretation was presented for the relation between the image of the absolute conic and sphere images. In this paper, we propose two geometric interpretations of this relation and two novel camera calibration methods using sphere images are derived from these geometric interpretations
Keywords :
calibration; cameras; computational geometry; image recognition; algebraic interpretation; camera calibration; conic images; double-contact theorem; geometric interpretations; perspective image; sphere images; Calibration; Cameras; Nonlinear equations; Thyristors; Camera calibration; double-contact theorem.; geometric interpretation; image of the absolute conic; sphere image; Algorithms; Artificial Intelligence; Image Enhancement; Image Interpretation, Computer-Assisted; Imaging, Three-Dimensional; Information Storage and Retrieval; Pattern Recognition, Automated; Reproducibility of Results; Sensitivity and Specificity;
Journal_Title :
Pattern Analysis and Machine Intelligence, IEEE Transactions on
DOI :
10.1109/TPAMI.2006.245
