Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 405521
Title X-ray inspection for boreholes in intact trees
Author(s) Jansen, R.M.C.; Hemming, J.
Source Wageningen : Wageningen UR Greenhouse Horticulture (Rapporten GTB 5006) - 26
Department(s) WUR GTB Tuinbouw Technologie
WUR GTB Gewasfysiologie Management en Model
Publication type Research report
Publication year 2010
Keyword(s) beeldanalyse - beeldverwerking - röntgenstraling - detectie - anoplophora chinensis - plantenplagen - insectenplagen - boomteelt - gewasbescherming - image analysis - image processing - x radiation - detection - plant pests - insect pests - arboriculture - plant protection
Categories Imaging Technology
Abstract X-ray systems are commonly used for luggage inspection. The size of these systems is sufficient for inspection of intact trees. The first objective of this study is to determine whether such an X-ray system is able to visualise boreholes in intact trees. The present study is partly based on human inspection of X-ray images to determine whether boreholes are visible or not. But, human inspection requires skilled personal which in-turn lead to high costs. Today, machine vision is often used to detect irregularities in images. The second objective of this study is to determine the ability of machine vision to detect boreholes in intact trees. A clear visualisation of boreholes by means of X-ray may depend on many factors. Factors as tree position, the stem diameter, the borehole diameter and position, the presence of boredust and the humidity of the wood are expected to be of prime importance. The third objective of this study is to determine the effect of the above mention factors on the visibility of boreholes in intact trees.
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