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Title: Tomographic Image Reconstruction Using an Interpolation Method for Tree Decay Detection

Source: BioResources, Volume 9, Number 2, 2014; pp. 3248-3263

Author(s)Feng, Hailin; Li, Guanghui; Fu, Sheng; Wang, Xiping

Publication Year: 2014  View PDF »

Category: Journal Articles
Associated Research Project(s):   FPL-4714-1B

Abstract: Stress wave velocity has been traditionally regarded as an indicator of the extent of damage inside wood. This paper aimed to detect internal decay of urban trees through reconstructing tomographic image of the cross section of a tree trunk. A grid model covering the cross section area of a tree trunk was defined with some assumptions. Stress wave data were processed beforehand to obtain the propagation velocity and the coordinate values. An image reconstruction algorithm for detecting internal decay was proposed based on an interpolation method, which estimated the velocity values of unknown grid points by utilizing the values of the surrounding points. To test the effectiveness of this method, Cinnamomum camphora tree samples were selected and tested using a stress wave tool. The area, positions, and extent of decay in the representative samples were displayed in tomographic images constructed by the interpolation method, and the results demonstrate the performance of the method.

Keywords: Stress wave, Tomography, Internal decay, Nondestructive testing, Trees

Publication Review Process: Formally Refereed

File size: 3,269 kb(s)

Date posted: 09/25/2014

This publication is also viewable on Treesearch:  view
RITS Product ID: 69460
Current FPL Scientist associated with this product
Wang, Xiping
Research Forest Products Technologist
  

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