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Combining X-ray and three-dimensional scanning of sawlogs – Comparison between one and two X-ray directions
SP- Sveriges Tekniska Forskningsinstitut, Trätek.
SP- Sveriges Tekniska Forskningsinstitut, Trätek.
2009 (English)In: Proceeings of 6th International Symposium on Image and Signal Processing and Analysis (ISPA 2009), Institute of Electrical and Electronics Engineers , 2009, , 343-348 p.Conference 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 one and 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
Institute of Electrical and Electronics Engineers , 2009. , 343-348 p.
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-11857Local ID: 10316OAI: oai:DiVA.org:ri-11857DiVA: diva2:969679
Conference
2009 6th International Symposium on Image and Signal Processing and Analysis (ISPA 2009). Zinterhof, P et al. (ed)
Note
Web page of the symposium at http://www.isispa.org/ispa09/Available from: 2016-09-13 Created: 2016-09-13Bibliographically approved

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