Analysis of log shape and internal knots in twenty maritime pine (Pinus pinaster Ait.) stems based on visual scanning and computer aided reconstruction

I. Pinto (Corresponding Author), H. Pereira, A. Usenius

Research output: Contribution to journalArticleScientificpeer-review

27 Citations (Scopus)

Abstract

A mathematical reconstruction of Maritime pine (Pinus pinaster Ait.) was produced using the WoodCim® software based on input information obtained by image scanning of twenty 83 years old stems sampled in Portugal. The application of the reconstruction software resulted in 3D and 2D representations for logs and trees that allowed the visual appraisal of external shape as well as of the internal knot architecture. Information on tree geometry (i.e. taper) and knot parameters (i.e. knot length, diameter and volume) and on their variation with tree height could be obtained from the reconstructed logs and stems and may be incorporated in sawing yield studies through simulation as well as in raw material characterisation studies. In the studied trees, the average volume percentage of knots varied from 0.07% for butt logs to 1.95% for top logs. The knot core represented, in % of the tree radius, from 28% at the stem bottom to 84% at 70% of total tree height.
Original languageEnglish
Pages (from-to)137-144
Number of pages8
JournalAnnals of Forest Science
Volume60
Issue number2
Publication statusPublished - 2003
MoE publication typeA1 Journal article-refereed

Fingerprint

Pinus pinaster
knots
stem
stems
software
sawing
economic valuation
Portugal
analysis
raw materials
geometry
simulation

Keywords

  • maritime pine
  • modelling
  • wood quality
  • knot dimensions
  • image analysis

Cite this

@article{6157ab13d9e446a6b7d72123925185df,
title = "Analysis of log shape and internal knots in twenty maritime pine (Pinus pinaster Ait.) stems based on visual scanning and computer aided reconstruction",
abstract = "A mathematical reconstruction of Maritime pine (Pinus pinaster Ait.) was produced using the WoodCim{\circledR} software based on input information obtained by image scanning of twenty 83 years old stems sampled in Portugal. The application of the reconstruction software resulted in 3D and 2D representations for logs and trees that allowed the visual appraisal of external shape as well as of the internal knot architecture. Information on tree geometry (i.e. taper) and knot parameters (i.e. knot length, diameter and volume) and on their variation with tree height could be obtained from the reconstructed logs and stems and may be incorporated in sawing yield studies through simulation as well as in raw material characterisation studies. In the studied trees, the average volume percentage of knots varied from 0.07{\%} for butt logs to 1.95{\%} for top logs. The knot core represented, in {\%} of the tree radius, from 28{\%} at the stem bottom to 84{\%} at 70{\%} of total tree height.",
keywords = "maritime pine, modelling, wood quality, knot dimensions, image analysis",
author = "I. Pinto and H. Pereira and A. Usenius",
year = "2003",
language = "English",
volume = "60",
pages = "137--144",
journal = "Annals of Forest Science",
issn = "1286-4560",
publisher = "Elsevier",
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}

Analysis of log shape and internal knots in twenty maritime pine (Pinus pinaster Ait.) stems based on visual scanning and computer aided reconstruction. / Pinto, I. (Corresponding Author); Pereira, H.; Usenius, A.

In: Annals of Forest Science, Vol. 60, No. 2, 2003, p. 137-144.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Analysis of log shape and internal knots in twenty maritime pine (Pinus pinaster Ait.) stems based on visual scanning and computer aided reconstruction

AU - Pinto, I.

AU - Pereira, H.

AU - Usenius, A.

PY - 2003

Y1 - 2003

N2 - A mathematical reconstruction of Maritime pine (Pinus pinaster Ait.) was produced using the WoodCim® software based on input information obtained by image scanning of twenty 83 years old stems sampled in Portugal. The application of the reconstruction software resulted in 3D and 2D representations for logs and trees that allowed the visual appraisal of external shape as well as of the internal knot architecture. Information on tree geometry (i.e. taper) and knot parameters (i.e. knot length, diameter and volume) and on their variation with tree height could be obtained from the reconstructed logs and stems and may be incorporated in sawing yield studies through simulation as well as in raw material characterisation studies. In the studied trees, the average volume percentage of knots varied from 0.07% for butt logs to 1.95% for top logs. The knot core represented, in % of the tree radius, from 28% at the stem bottom to 84% at 70% of total tree height.

AB - A mathematical reconstruction of Maritime pine (Pinus pinaster Ait.) was produced using the WoodCim® software based on input information obtained by image scanning of twenty 83 years old stems sampled in Portugal. The application of the reconstruction software resulted in 3D and 2D representations for logs and trees that allowed the visual appraisal of external shape as well as of the internal knot architecture. Information on tree geometry (i.e. taper) and knot parameters (i.e. knot length, diameter and volume) and on their variation with tree height could be obtained from the reconstructed logs and stems and may be incorporated in sawing yield studies through simulation as well as in raw material characterisation studies. In the studied trees, the average volume percentage of knots varied from 0.07% for butt logs to 1.95% for top logs. The knot core represented, in % of the tree radius, from 28% at the stem bottom to 84% at 70% of total tree height.

KW - maritime pine

KW - modelling

KW - wood quality

KW - knot dimensions

KW - image analysis

M3 - Article

VL - 60

SP - 137

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JO - Annals of Forest Science

JF - Annals of Forest Science

SN - 1286-4560

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ER -