<abstract xmlns="http://www.w3.org/1999/xhtml">
				
				<p> This paper presents an easy and effective method to extract tree rings completely from images of tree discs independent of their source. The method uses Active Contours, often used in medical image processing to detect organs, in combination with an optimised image filter based on the Sobel operator to automatically outline the tree rings. Special attention is given to eliminate critical physical irregularities caused by branches, cracks or colourisations. The work resulted in the implementation of a platform independent, free and open source software solution for semiautomatic tree ring segmentation. Comparison to manual measurements shows that the system is dependable and the results are reproducible. The system has been applied to several conifer species.</p>
			</abstract>

This paper presents an easy and effective method to extract tree rings completely from images of tree discs independent of their source. The method uses Active Contours, often used in medical image processing to detect organs, in combination with an optimised image filter based on the Sobel operator to automatically outline the tree rings. Special attention is given to eliminate critical physical irregularities caused by branches, cracks or colourisations. The work resulted in the implementation of a platform independent, free and open source software solution for semiautomatic tree ring segmentation. Comparison to manual measurements shows that the system is dependable and the results are reproducible. The system has been applied to several conifer species.

Semiautomatic tree ring segmentation using Active Contours and an optimised gradient operator / Poloautomatizovaná segmentácia ročných radiálnych kruhov stromov s využitím metódy „Active Contours“ a optimalizovaného gradientového operátora

Department Ecoinformatics, Biometrics and Forest Growth, University of Göttingen, Büsgenweg 4, 37077 Göttingen, Germany

Central European Forestry Journal

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

This paper presents an easy and effective method to extract tree rings completely from images of tree discs independent of their source. The method uses Active...

Semiautomatic tree ring segmentation using Active Contours and an optimised gradient operator / Poloautomatizovaná segmentácia ročných radiálnych kruhov stromov s využitím metódy „Active Contours“ a optimalizovaného gradientového operátora

Published Online: Dec 30, 2014

Page range: 185 - 190

DOI: https://doi.org/10.2478/forj-2014-0020

© by Michael Henke

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.