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Original title:
Improved precision of stereometric measurement of relief's surface by means of structured light enhanced photometric stereo method
Authors: Valach, Jaroslav ; Bryscejn, Jan
Document type: Papers
Conference/Event: Experimentální analýza napětí 2011, Znojmo (CZ), 2011-06-06 / 2011-06-09
Year: 2011
Language: eng
Abstract: 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.
Keywords: optical methods; photometry; strain measurement
Project no.: CEZ:AV0Z20710524 (CEP), DF11P01OVV001 (CEP)
Funding provider: GA MK
Host item entry: Experimentální analýza napětí 2011, ISBN 978-80-214-4275-7
Institution: Institute of Theoretical and Applied Mechanics AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0201757
Permalink: http://www.nusl.cz/ntk/nusl-71570
The record appears in these collections:
Research > Institutes ASCR > Institute of Theoretical and Applied Mechanics
Conference materials > Papers
Authors: Valach, Jaroslav ; Bryscejn, Jan
Document type: Papers
Conference/Event: Experimentální analýza napětí 2011, Znojmo (CZ), 2011-06-06 / 2011-06-09
Year: 2011
Language: eng
Abstract: 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.
Keywords: optical methods; photometry; strain measurement
Project no.: CEZ:AV0Z20710524 (CEP), DF11P01OVV001 (CEP)
Funding provider: GA MK
Host item entry: Experimentální analýza napětí 2011, ISBN 978-80-214-4275-7
Institution: Institute of Theoretical and Applied Mechanics AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0201757
Permalink: http://www.nusl.cz/ntk/nusl-71570
The record appears in these collections:
Research > Institutes ASCR > Institute of Theoretical and Applied Mechanics
Conference materials > Papers
Record created 2011-11-18, last modified 2024-01-26