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Implementation of a robust coded structured light technique for dynamic 3D measurements

This paper presents the implementation details of a coded structured light system for rapid shape acquisition of unknown surfaces. Such techniques are based on the projection of patterns onto a measuring surface and grabbing images of every projection with a camera. Analyzing the pattern deformations that appear in the images, 3D information of the surface can be calculated. The implemented technique projects a unique pattern so that it can be used to measure moving surfaces. The structure of the pattern is a grid where the color of the slits are selected using a De Bruijn sequence. Moreover, since both axis of the pattern are coded, the cross points of the grid have two codewords (which permits to reconstruct them very precisely), while pixels belonging to horizontal and vertical slits have also a codeword. Different sets of colors are used for horizontal and vertical slits, so the resulting pattern is invariant to rotation. Therefore, the alignment constraint between camera and projector considered by a lot of authors is not necessary

© International Conference on Image Processing : 2003 : ICIP 2003 : Proceedings, 2003, vol. 3, p. 1073-1076

IEEE

Autor: Pagès Marco, Jordi
Salvi, Joaquim
Matabosch Geronès, Carles
Data: 2003
Resum: This paper presents the implementation details of a coded structured light system for rapid shape acquisition of unknown surfaces. Such techniques are based on the projection of patterns onto a measuring surface and grabbing images of every projection with a camera. Analyzing the pattern deformations that appear in the images, 3D information of the surface can be calculated. The implemented technique projects a unique pattern so that it can be used to measure moving surfaces. The structure of the pattern is a grid where the color of the slits are selected using a De Bruijn sequence. Moreover, since both axis of the pattern are coded, the cross points of the grid have two codewords (which permits to reconstruct them very precisely), while pixels belonging to horizontal and vertical slits have also a codeword. Different sets of colors are used for horizontal and vertical slits, so the resulting pattern is invariant to rotation. Therefore, the alignment constraint between camera and projector considered by a lot of authors is not necessary
Format: application/pdf
Cita: Pagès Marco, J., Salvi Mas, J., i Matabosch Geronès, C. (2003). Implementation of a robust coded structured light technique for dynamic 3D measurements. International Conference on Image Processing : 2003 : ICIP 2003 : Proceedings, 3, 1073-1072. Recuperat 14 maig 2010, a http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=1247434
ISBN: 0-7803-7750-8
ISSN: 1522-4880
Accés al document: http://hdl.handle.net/10256/2285
Llenguatge: eng
Editor: IEEE
Col·lecció: Reproducció digital del document publicat a: http://dx.doi.org/10.1109/ICIP.2003.1247434
Articles publicats (D-ATC)
És part de: © International Conference on Image Processing : 2003 : ICIP 2003 : Proceedings, 2003, vol. 3, p. 1073-1076
Drets: Tots els drets reservats
Matèria: Càmeres estereoscòpiques
Percepció de la profunditat
Visió artificial (Robòtica)
Visió per ordinador
Visualització tridimensional (Informàtica)
Computer vision
Depth perception
Robot vision
Stereoscopic cameras
Three-dimensional display systems
Títol: Implementation of a robust coded structured light technique for dynamic 3D measurements
Tipus: info:eu-repo/semantics/article
Repositori: DUGiDocs

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