The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 07, 2012
Filed:
Nov. 27, 2007
Jae Chul Kim, Taejon, KR;
Chang Woo Chu, Taejon, KR;
Ho Won Kim, Taejon, KR;
Jeung Chul Park, Jeollabuk-Do, KR;
Ji Young Park, Seoul, KR;
Seong Jae Lim, Gwangju, KR;
Bon Ki Koo, Taejon, KR;
Jae Chul Kim, Taejon, KR;
Chang Woo Chu, Taejon, KR;
Ho Won Kim, Taejon, KR;
Jeung Chul Park, Jeollabuk-Do, KR;
Ji Young Park, Seoul, KR;
Seong Jae Lim, Gwangju, KR;
Bon Ki Koo, Taejon, KR;
Abstract
Provided is a camera self-calibration method that calculates a focal length of a fixed zoom lens camera from a correspondence point position between images. In the method, a cost function, which is a function of a focal length, is defined, and a focal length that minimizes the defined cost function is obtained to obtain a focal length that allows 3D recovery results of correspondence points calculated from all image pairs coincide with one another. Therefore, reliability of the calculated focal length can be easily verified, and the focal length of the camera can be stably calculated even when the position of input correspondence point is inaccurately given.