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Improved precision of stereometric measurement of relief's surface by means of structured light enhanced photometric stereo method
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SYSNO ASEP 0366935 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Improved precision of stereometric measurement of relief's surface by means of structured light enhanced photometric stereo method Author(s) Valach, Jaroslav (UTAM-F) SAI, ORCID, RID
Bryscejn, Jan (UTAM-F) RID, SAINumber of authors 2 Source Title Experimentální analýza napětí 2011. - Brno : Czech society for mechanics, 2011 / Návrat T. ; Fuis V. ; Houfek L. ; Vlk M. - ISBN 978-80-214-4275-7 Pages s. 411-415 Number of pages 5 s. Action Experimentální analýza napětí 2011 Event date 06.06.2011-09.06.2011 VEvent location Znojmo Country CZ - Czech Republic Event type EUR Language eng - English Country CZ - Czech Republic Keywords optical methods ; strain measurement ; photometry Subject RIV JB - Sensors, Measurment, Regulation R&D Projects DF11P01OVV001 GA MK - Ministry of Culture (MK) CEZ AV0Z20710524 - UTAM-F (2005-2011) Annotation Photometry is an interesting method for 3D measurement of surfaces with relief. It utilizes a relationship between depth of shadow determined intensity of light and surface normal orientation towards source of light. Advantage of methods incorporating this principle is their independence on distance between measured object and the measuring apparatus and scalable sensitivity suitable for relatively flat surfaces. On the other hand, there is a drawback as the photometric methods yield results up to an unknown multiplicative factor. One way how to overcome this limitation is to simultaneously describe the measured surface by means of another optical method. Among the -candidates-, the structured light projection is the most promising one for a simple implementation. The presentation of the possibility to integrate these two methods in unified system is main topic of this contribution. Workplace Institute of Theoretical and Applied Mechanics Contact Kulawiecová Kateřina, kulawiecova@itam.cas.cz, Tel.: 225 443 285 Year of Publishing 2012
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