Title: A survey of cloud lighting and rendering techniques
Authors: Kanzok, Thomas
Linsen, Lars
Rosenthal, Paul
Citation: Journal of WSCG. 2012, vol. 20, no. 3, p. 161-170.
Issue Date: 2012
Publisher: Václav Skala - UNION Agency
Document type: článek
URI: http://wscg.zcu.cz/WSCG2012/!_2012-Journal-Full-3.pdf
ISSN: 1213–6972 (hardcopy)
1213–6980 (CD-ROM)
1213–6964 (on-line)
Keywords: 3D objekty;skenování;korekce jasu;vykreslování;mračna bodů
Keywords in different language: 3D objects;scanning;luminance correction;rendering;point clouds
Abstract: Scanning 3D objects has become a valuable asset to many applications. For larger objects such as buildings or bridges, a scanner is positioned at several locations and the scans are merged to one representation. Nowadays, such scanners provide, beside geometry, also color information. The different lighting conditions present when taking the various scans lead to severe luminance artifacts, where scans come together. We present an approach to remove such luminance inconsistencies during rendering. Our approach is based on image-space operations for both luminance correction and point-cloud rendering. It produces smooth-looking surface renderings at interactive rates without any preprocessing steps. The quality of our results is similar to the results obtained with an object-space luminance correction. In contrast to such an object-space technique the presented image-space approach allows for instantaneous rendering of scans, e.g. for immediate on-site checks of scanning quality.
Rights: © Václav Skala - UNION Agency
Appears in Collections:Number 3 (2012)

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Please use this identifier to cite or link to this item: http://hdl.handle.net/11025/1080

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