Laser stripe peak detector for 3D scanners: a FIR filter approach

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To access the full text documents, please follow this link: http://hdl.handle.net/10256/2296

dc.contributor.author	Forest Collado, Josep
dc.contributor.author	Salvi, Joaquim
dc.contributor.author	Cabruja i Casas, Enric
dc.contributor.author	Pous i Sabadí, Carles
dc.date	2004
dc.identifier.citation	Forest, J., Salvi, J., Cabruja, E., i Pous, C. (2004). Laser stripe peak detector for 3D scanners. A FIR filter approach. Proceedings of the 17th International Conference on Pattern Recognition : 2004 : ICPR 2004, 3, 646-649. Recuperat 14 maig 2010, a http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=1334612
dc.identifier.citation	0-7695-2128-2
dc.identifier.citation	1051-4651
dc.identifier.uri	http://hdl.handle.net/10256/2296
dc.description.abstract	The accuracy of a 3D reconstruction using laser scanners is significantly determined by the detection of the laser stripe. Since the energy pattern of such a stripe corresponds to a Gaussian profile, it makes sense to detect the point of maximum light intensity (or peak) by computing the zero-crossing point of the first derivative of such Gaussian profile. However, because noise is present in every physical process, such as electronic image formation, it is not sensitive to perform the derivative of the image of the stripe in almost any situation, unless a previous filtering stage is done. Considering that stripe scanning is an inherently row-parallel process, every row of a given image must be processed independently in order to compute its corresponding peak position in the row. This paper reports on the use of digital filtering techniques in order to cope with the scanning of different surfaces with different optical properties and different noise levels, leading to the proposal of a more accurate numerical peak detector, even at very low signal-to-noise ratios
dc.format	application/pdf
dc.language.iso	eng
dc.publisher	IEEE
dc.relation	© Proceedings of the 17th International Conference on Pattern Recognition, 2004, vol. 3, p. 646-649
dc.relation	Articles publicats (D-ATC)
dc.rights	Tots els drets reservats
dc.subject	Detectors òptics
dc.subject	Escombratge, Tècniques d'
dc.subject	Filtres digitals (Matemàtica)
dc.subject	Visualització tridimensional (Informàtica)
dc.subject	Digital filtering
dc.subject	Optical detectors
dc.subject	Scanning systems
dc.subject	Three-dimensional display systems
dc.title	Laser stripe peak detector for 3D scanners: a FIR filter approach
dc.type	info:eu-repo/semantics/article

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