Wernersson, Erik
- Centre for Image Analysis, Swedish University of Agricultural Sciences
Van den Bulcke, Jan; Wernersson, Erik; Dierick, Manuel; Van Loo, Denis; Masschaele, Bert; Brabant, Loes; Boone, Matthieu N.; Van Hoorebeke, Luc; Haneca, Kristof; Brun, Anders; Luengo, Cris; Van Acker, Joris
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.
Dendrochronology; Densitometry; Helical CT
Dendrochronologia
2014, Volume: 32, number: 1, pages: 39-46
Publisher: ELSEVIER GMBH, URBAN & FISCHER VERLAG
Botany
Forest Science
DOI: https://doi.org/10.1016/j.dendro.2013.07.001
https://res.slu.se/id/publ/67717