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Combining x-ray and three-dimensional scanning of sawlogs: comparison between one and two x-ray directions
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Träteknologi.
2009 (Engelska)Ingår i: 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, s. 353-358Konferensbidrag, Publicerat paper (Refereegranskat)
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.

Ort, förlag, år, upplaga, sidor
Piscataway, NJ: IEEE Communications Society, 2009. s. 353-358
Nationell ämneskategori
Annan maskinteknik
Forskningsämne
Träteknik
Identifikatorer
URN: urn:nbn:se:ltu:diva-39501Lokalt ID: e4978040-e65b-11de-bae5-000ea68e967bISBN: 978-1-424-45649-9 (tryckt)OAI: oai:DiVA.org:ltu-39501DiVA, id: diva2:1013014
Konferens
International Symposium on Image and Signal Processing and Analysis : 16/09/2009 - 18/09/2009
Anmärkning
Godkänd; 2009; 20091211 (ysko)Tillgänglig från: 2016-10-03 Skapad: 2016-10-03 Senast uppdaterad: 2017-11-25Bibliografiskt granskad

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

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Skog, JohanOja, Johan

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