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- Title
Verzeichnungskorrektur einer omnidirektionalen Kamera durch 3D-Referenzobjekte.
- Authors
Sigel, Andre; Heinrich, Andreas
- Abstract
To utilize images for metrology tasks distortion free images are required. If the optical setup doesn't allow to use low distortion optical elements, distorted images can subsequently be corrected by the means of software algorithms. In this publication such a procedure to correct radial distortion effects for a 3D light section sensor is presented. The calibration procedure was developed for a 3D metrology system but is based on processing of 2D image data. The selection of suitable calibration objects as well as the representation of the distortion effects by an appropriate correction function based on a Taylor series is explained in this publication. The correction procedure is executed by the means of an optimization algorithm and minimizes a merit function representing residual distortion errors. The presented procedure includes a distortion correction with an accuracy in the double-digit micrometer range for a wide angle lens.
- Subjects
MATHEMATICAL optimization; OPTIMIZATION algorithms; OPTICAL distortion; TRIANGULATION; METROLOGY; OPTICAL elements; LASERS; LIGHTING; MICROMETERS; LENSES
- Publication
Technisches Messen, 2022, Vol 89, Issue 11, p729
- ISSN
0171-8096
- Publication type
Article
- DOI
10.1515/teme-2022-0067