Method of tree-ring image analysis for dendrochronology

Hong Zhou; Rong Feng; Hua-hong HuangEr-pei LinJun-lin Yu

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Method of tree-ring image analysis for dendrochronology

机译：Method of tree-ring image analysis for dendrochronology

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摘要

An improved tree-ring dating method able to detect and count tree-ring boundaries from images of wood cross sections is introduced. It can also be developed to analyze tree-ring features in future research. This proposed method first uses hue saturation intensity (HSI) color to get rid of the blue background to obtain the region of interest, the wood section. Then, using the watershed method and the window method, sapwood and heartwood regions are segmented, and the segmented image is dichotomized by the method, followed by cross calibrated miss detection correction to add missed rings. In order to reduce the fallout ratio, a method based on distance limitations is also utilized. In this way, the total number of the tree-rings are finally counted. A pilot study was conducted using seven images from an online library and five scanned images of Pinus massoniana wood discs provided by Zhejiang AF University. Experimental results show that this method can be used to count ring numbers even when the color difference of sapwood and heartwood is distinct, and is able to correct the miss and fallout detection errors, increasing the accuracy of tree-ring dating.

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来源
《Optical Engineering》 |2012年第7期|077202-1-077202-7|共7页
作者
Hong Zhou; Rong Feng; Hua-hong HuangEr-pei LinJun-lin Yu;
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作者单位

Zhejiang A&F University, Department of Genetics, School of Forestry and Biotechnology, Hangzhou 311300, China;

Chinese University of Hong Kong, Department of Information Engineering, Hong Kong;

Zhejiang University, Department of Instrument Science and Engineering, Hangzhou 310027, China;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种英语
中图分类计量学;
关键词
tree-ring counting; hue saturation intensity model; color difference; miss correction; fallout correction;

Method of tree-ring image analysis for dendrochronology

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