a novel procedure to measure shrinkage-free tree-rings from very large wood samples combining photogrammetry, high-resolution image processing, and gis tools论文.pdf

Dendrochronologia 34 (2015) 24–28 Contents lists available at ScienceDirect Dendrochronologia j o u r na l h o me p a g e : w w w. elsev /locate/dendro TECHNICAL NOTE A novel procedure to measure shrinkage-free tree-rings from very large wood samples combining photogrammetry, high-resolution image processing, and GIS tools Nicolas Latte a,∗ , Hans Beeckman b , Sébastien Bauwens a , Stéphanie Bonnet a , Philippe Lejeune a a Forest Resources Management, University of Liège, Gembloux Agro-Bio Tech, Passage des Déportés 2, 5030 Gembloux, Belgium b Service of Wood Biology, Royal Museum for Central Africa, Leuvensesteenweg 13, 3080 Tervuren, Belgium a r t i c l e i n f o a b s t r a c t Article history: We present a new procedure for wood sampling and tree-ring measurement that can be used for den- Received 28 October 2014 drochronological investigation on very large trees, specifically adapted for tropical rainforest species. This Accepted 13 March 2015 procedure takes advantage of the technological developments in computing, image processing, and geo- graphic information systems (GIS) to overcome the technical limitations of the currently used methods. Keywords: Two types of wood samples can be used (stem disks and/or bars) depending on tree diameter, and the Dendrochronology difficulty of ring delineation and crossdating. Bars are an effective compromise between cores and disks. Tropical tree species We developed an ap