An automated method for tree-ring delineation based on active contours guided by DT-CWT complex coefficients in photographic images: Application to Abies alba wood slice images

Pol Kennel 1, 2 Philippe Borianne 1 Gérard Subsol 2
2 ICAR - Image & Interaction
LIRMM - Laboratoire d'Informatique de Robotique et de Microélectronique de Montpellier
Abstract : This paper describes an efficient method for delineating tree-rings and inter tree-rings in wood slice images. The method is based on an active contour approach and a multi-scale gradient map resulting from the Dual Tree Complex Wavelet Transform (DT-CWT). The method is automated and does not require any pith localization. It is also quite robust to some defect structures such as branch prints, cracks, knots or mold. We applied the method to process entire Abies alba wood slices (aged from 10 to 50 years) from bark to pith, which amounted to about 200 tree-rings. Our automatic delineation method performed accurately compared to the manual expert measurements with a mean F-score of 0.91 for the quality of delineation.
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Journal articles
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https://hal-lirmm.ccsd.cnrs.fr/lirmm-01275680
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Submitted on : Wednesday, February 17, 2016 - 10:52:45 PM
Last modification on : Friday, March 29, 2019 - 9:10:41 AM

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Pol Kennel, Philippe Borianne, Gérard Subsol. An automated method for tree-ring delineation based on active contours guided by DT-CWT complex coefficients in photographic images: Application to Abies alba wood slice images. Computers and Electronics in Agriculture, Elsevier, 2015, 118, pp.204-214. ⟨10.1016/j.compag.2015.09.009⟩. ⟨lirmm-01275680⟩

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