Heartwood detection for Scotch pine by fluorescence image analysis
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Jukka Antikainen
,
Tapani Hirvonen
Abstract
Heartwood detection for Scotch pine (Pinus sylvestris) is possible via several different methods, such as X-ray and infrared cameras. X-ray systems are often very expensive and need huge modifications of sawmill equipment for implementation. Infrared cameras are more affordable but can only be applied for fresh samples with high water content. This article describes a novel imaging method for heartwood detection for Scotch pine, which is based on the fluorescence information emitted of pinosylvin type stilbene and its monomethyl ether. Fluorescence imaging is a low-cost method for measuring heartwood content in real time on an industrial line. The method is applicable for fresh and dried samples. This paper will show the results of fluorescence matrices of Scotch pine. Measurements were made with a bispectrometer system to obtain suitable wavelengths for the excitation and detection of fluorescence. A reliable measuring system is described, which is suited for on-line measurements on an industrial line. An algorithm will also be presented, which is useful for quantification of heartwood and sapwood.
©2012 by Walter de Gruyter Berlin Boston
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Articles in the same Issue
- Masthead
- Masthead
- Review
- Comparative evaluation of different kinetic models for batch cooking: A review
- Original Papers
- Characteristics of prehydrolysis-kraft pulp fibers from Scots pine
- Treating birch wood with a switchable 1,8-diazabicyclo-[5.4.0]-undec-7-ene-glycerol carbonate ionic liquid
- Optical properties of thermomechanical pulp (TMP) obtained from sulfite-pretreated Norway spruce with focus on two-photon spectral imaging (TPSI)
- Physicochemical properties of sodium lignosulfonates (NaLS) modified by laccase
- Determination of metal ions in single wood fiber by LA-ICP-MS
- Hydrolytic enzyme activity of EN113 standard basidiomycetes in the fermentation of lignocellulosic material and wood colonization
- Influence of the viscosity of UF resins on the radial and tangential penetration into poplar wood and on the shear strength of adhesive joints
- Development of soy-based adhesives for the manufacture of wood composite products
- Exploratory study on fatigue behaviour of laterally loaded, nailed timber joints, based on a dissipated energy criterion
- Young’s and shear moduli of glued laminated timber composed of different species obtained by a flexural vibration test
- Heartwood detection for Scotch pine by fluorescence image analysis
- The antagonistic properties of Trichoderma spp. inhabiting woods for potential biological control of wood-damaging fungi
- Investigation of copper solubilization and reaction in micronized copper treated wood by electron paramagnetic resonance (EPR) spectroscopy
- A genetic marker of 4-coumarate: coenzyme A ligase gene in the cinnamaldehyde-chemotype Cinnamomum osmophloeum
- Meetings
- Meetings
