Wernersson, Erik
- Centre for Image Analysis, Sveriges lantbruksuniversitet
Sammanfattning
The current state-of-the-art of tree-ring analysis and densitometry is still mainly limited to two dimensions and mostly requires proper treatment of the surface of the samples. In this paper we elaborate on the potential of helical X-ray computed tomography for 3D tree-ring analysis. Microdensitometrical profiles are obtained by processing of the reconstructed volumes. Correction of the structure direction, taking into account the angle of growth rings and grain, results in very accurate microdensity and precise ring width measurements. Both a manual as well as an automated methodology is proposed here, of which the MATLAB (c) code is available. Examples are given for pine (Pinus sylvestris L), oak (Quercus robur L) and teak (Tectona grandis L.). In all, the methodologies applied here on the 3D volumes are useful for growth related studies, enabling a fast and non-destructive analysis. (C) 2013 Elsevier GmbH. All rights reserved.
Nyckelord
Dendrochronology; Densitometry; Helical CT
Publicerad i
Dendrochronologia
2014, volym: 32, nummer: 1, sidor: 39-46
Utgivare: ELSEVIER GMBH, URBAN & FISCHER VERLAG
SLU författare
Brun, Anders
- Centre for Image Analysis, Sveriges lantbruksuniversitet
- Centre for Image Analysis, Sveriges lantbruksuniversitet
Luengo, Cris
- Centre for Image Analysis, Sveriges lantbruksuniversitet
- Centre for Image Analysis, Sveriges lantbruksuniversitet
UKÄ forskningsämne
Botanik
Skogsvetenskap
Publikationens identifierare
- DOI: https://doi.org/10.1016/j.dendro.2013.07.001
Permanent länk till denna sida (URI)
https://res.slu.se/id/publ/67717