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Measuring the outer shape of Pinus sylvestris saw logs with an x-ray LogScanner
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Wood Science and Engineering.
1998 (English)In: Scandinavian Journal of Forest Research, ISSN 0282-7581, E-ISSN 1651-1891, Vol. 13, no 3, p. 340-347Article in journal (Refereed) Published
Abstract [en]

The accuracy of measuring the outer shape of Scots pine (Pinus sylvestris L.) saw logs with an X-ray LogScanner has been compared with the accuracy of using a 2-axis optical scanner, a 3-axis optical scanner and an ideal 3-D optical scanner. The different scanners were simulated using computed tomography (CT) data from the Swedish Stem Bank. The outer shape of 60 saw logs was measured every third centimeter. The error attributable to bark when using optical scanners was simulated separately. The results from the simulations showed that when measuring the outer shape on bark, the X-ray LogScanner facilitated measurement of the minimum shadow diameter with the same accuracy as with a 3-D optical scanner. The results also showed that the potential of combining the X-ray LogScanner with a 3-D optical scanner should be investigated

Place, publisher, year, edition, pages
1998. Vol. 13, no 3, p. 340-347
National Category
Other Mechanical Engineering
Research subject
Wood Technology
Identifiers
URN: urn:nbn:se:ltu:diva-6786Local ID: 514d89b0-bb52-11db-b560-000ea68e967bOAI: oai:DiVA.org:ltu-6786DiVA: diva2:979672
Note
Godkänd; 1998; 20061025 (cira)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved

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Oja, JohanGrundberg, StigGrönlund, Anders
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