Modeling image center and feature trajectory under changing focal length

Author

Mobasseri, Bijan G.

Author_Institution

Dept. of Electr. & Comput. Eng., Villanova Univ., PA, USA

Volume

1

fYear

1995

fDate

23-26 Oct 1995

Firstpage

227

Abstract

Camera calibration is an important task in a computer vision system. This step establishes the all important relationship between the 2D image coordinates and their 3D counterparts and vice versa. Image center is subject to many different definitions. Moreover, its location is subject to a drift in most variable parameter lenses. This drift has an adverse effect on algorithms that rely on the a fixed center of image. A geometric model is presented that describes the trajectory of feature points in response to changing focal length under a shifting image center

Keywords

calibration; computer vision; lenses; motion estimation; photographic lenses; 2D image coordinates; algorithms; camera calibration; changing focal length; computer vision system; drift; feature points trajectory; feature trajectory; geometric model; image center modeling; shifting image center; variable parameter lenses; Calibration; Cameras; Computer vision; Distortion measurement; Focusing; Lenses; Optical devices; Optical distortion; Optical sensors; Solid modeling;

fLanguage

English

Publisher

ieee

Conference_Titel

Image Processing, 1995. Proceedings., International Conference on

Conference_Location

Washington, DC

Print_ISBN

0-8186-7310-9

Type

conf

DOI

10.1109/ICIP.1995.529587

Filename

529587