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Author Chmelar, P. ♦ Beran, L. ♦ Rejfek, L. ♦ Kudriavtseva, N.
Source IEEE Xplore Digital Library
Content type Text
Publisher Institute of Electrical and Electronics Engineers, Inc. (IEEE)
File Format PDF
Copyright Year ©2015
Language English
Subject Domain (in DDC) Natural sciences & mathematics ♦ Physics ♦ Electricity & electronics ♦ Technology ♦ Engineering & allied operations ♦ Applied physics
Subject Keyword Barrel Distortion ♦ Super-sampling ♦ Three-dimensional displays ♦ 3D Range Scanning ♦ Optical distortion ♦ Distortion ♦ Cameras ♦ Laser Line Detection ♦ Distortion measurement ♦ Mathematical model ♦ Rotated Grid super-sampling ♦ Lenses
Abstract Nowadays lasers in the measurement industry are widely used. The accuracy of optical rangefinders, which detect a laser line directly from a taken frame, lies in precise laser line detection. By using a lens with a smaller focal length, a barrel distortion can occur. In this paper we would like to introduce an effective method for barrel distortion correction. The algorithm also includes a super-sampling method to prevent line discontinuities especially on image borders, where the influence of distortion effect is significant. The algorithm description also includes substantial speed-up of the whole process by using a correction matrix. A correction matrix is estimated only once for a specific frame dimension and user's parameters. Then the camera correction matrix is used in the mapping process. The paper also includes a time comparison between using a different super-sampling quality and the benefit of using the correction matrix.
Description Author affiliation: Dept. of Electr. Eng., Univ. of Pardubice, Pardubice, Czech Republic (Chmelar, P.; Beran, L.; Rejfek, L.; Kudriavtseva, N.)
ISBN 9789531842099
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Research ♦ Reading
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2015-09-28
Publisher Place Croatia
Rights Holder Croatian Society Electronics in Marine - ELMAR
Size (in Bytes) 1.01 MB
Page Count 4
Starting Page 37
Ending Page 40


Source: IEEE Xplore Digital Library