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Stereo camera calibration with diffractive optical elements

Grießbach, Denis and Bauer, Martin and Hermerschmidt , Andreas and Scheele, Martin and Schischmanow, Adrian (2009) Stereo camera calibration with diffractive optical elements. 110. DGaO-Jahrestagung 2009 , 02.-05. Jun. 2009, Brescia, Italien.

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Abstract

In order to use stereo camera based measurements in machine vision high accuracy geometric camera calibration is absolutely essential. For many applications it is necessary to use the epipolar constraint to improve matching algorithms or to rectify images with high accuracy which is most important to compute dense disparity maps. The objective is to determine the interior camera parameters including a distortion model as well as the exterior orientation. Therefor we introduce a two-step approach to calibrate a stereo camera system by means of diffractive optical elements. Working as a beam splitter with precisely defined diffraction angles, it produces a well known diffraction point pattern. As the virtual sources of the diffracted beams are points at infinity, the object to be imaged is invariant against translation. This particular feature allows a complete camera calibration with a single image avoiding complex bundle adjustments, resulting in a very fast and reliable single camera calibration procedure. This procedure has been extended for stereo systems to determine the exterior orientation of both cameras. The compact calibration setup also allows an in-field calibration.

Document Type:Conference or Workshop Item (Speech)
Title:Stereo camera calibration with diffractive optical elements
Authors:
AuthorsInstitution or Email of Authors
Grießbach, DenisUNSPECIFIED
Bauer, MartinUNSPECIFIED
Hermerschmidt , AndreasHOLOEYE Photonics AG
Scheele, MartinUNSPECIFIED
Schischmanow, AdrianUNSPECIFIED
Date:5 June 2009
Status:Published
Keywords:Prüfung optischer Systeme, Diffraktive Optik, 3D-Messtechnik, diffractive optics,
Event Title:110. DGaO-Jahrestagung 2009
Event Location:Brescia, Italien
Event Type:international Conference
Event Dates:02.-05. Jun. 2009
Organizer:Deutsche Gesellschaft für angewandte Optik e. V. und Società Italiana di Ottica e Fotonica
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EO - Erdbeobachtung
DLR - Research area:Space
DLR - Program:W EO - Erdbeobachtung
DLR - Research theme (Project):W -- no assignement (old)
Location: Berlin-Adlershof
Institutes and Institutions:Optical Information Systems
Deposited By: Ute Dombrowski
Deposited On:01 Mar 2010 07:39
Last Modified:01 Mar 2010 07:39

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