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Combining x-ray and three-dimensional scanning of sawlogs: comparison between one and two x-ray directions
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Wood Science and Engineering.
2009 (English)In: Proceedings of the 6th International Symposium on Image and Signal Processing and Analysis, 2009: ISPA 2009 ; Salzburg, Austria, 16 - 18 Sept. 2009 / [ed] Peter Zinterhof, Piscataway, NJ: IEEE Communications Society, 2009, p. 353-358Conference paper, Published paper (Refereed)
Abstract [en]

In many sawmills, presorting of sawlogs is based on data from optical three-dimensional (3D) scanners. The use of x-ray log scanners is also becoming increasingly common and most sawmills installing an x-ray scanner already have a 3D scanner present. It is in this paper demonstrated how data from oneand two-directional x-ray scanners can be combined with 3D scanner data using path length compensation. Examples show how the resulting images may be processed in order to predict quality parameters such as heartwood diameter and green heartwood density. Using the proposed method, it is possible to improve the accuracy of these important quality sorting parameters using existing equipment. This will improve the presorting at sawmills, thus reducing the production of off-grade products carrying unwanted combinations of dimension and grade.

Place, publisher, year, edition, pages
Piscataway, NJ: IEEE Communications Society, 2009. p. 353-358
National Category
Other Mechanical Engineering
Research subject
Wood Technology
Identifiers
URN: urn:nbn:se:ltu:diva-39501Local ID: e4978040-e65b-11de-bae5-000ea68e967bISBN: 978-1-424-45649-9 (print)OAI: oai:DiVA.org:ltu-39501DiVA, id: diva2:1013014
Conference
International Symposium on Image and Signal Processing and Analysis : 16/09/2009 - 18/09/2009
Note
Godkänd; 2009; 20091211 (ysko)Available from: 2016-10-03 Created: 2016-10-03 Last updated: 2017-11-25Bibliographically approved

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http://www.isispa.org/ispa09/

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Skog, JohanOja, Johan

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CiteExportLink to record
Permanent link

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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf