Publikace detail

Effective Lens Distortion Correction for 3D Range Scannig Systems

Autoři: Chmelař Pavel | Beran Ladislav | Rejfek Luboš | Chmelařová Natalija

Rok: 2015

Druh publikace: článek ve sborníku

Název zdroje: 57th International Symposium ELMAR-2015: proceedings

Název nakladatele: IEEE (Institute of Electrical and Electronics Engineers)

Místo vydání: New York

Strana od-do: 37-40

Tituly:

Jazyk	Název	Abstrakt	Klíčová slova
cze	Efektivní korekce zkreslení objektivu pro 3D skenovací systém	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.	Barelové zkreslení; Super-sampling; Rotated Grid super-sampling; Desekce laserové přímky; 3D skenování
eng	Effective Lens Distortion Correction for 3D Range Scannig Systems	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.	Barrel distortion; Super-sampling; Rotated Grid super-sampling; Laser line detection; 3D range scanning

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