Fast Fourier transform and filtered image analyses of fiber orientation in OSB

T Nishimura, M P Ansell

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

The objective of this paper is to investigate the relationship between resolution of images and measurement of fiber orientation in oriented strand board with the ultimate aim of optimising the fiber orientation and quality of the manufactured product. An important consideration has been the capture of images from a distance of 2 meters corresponding to conditions on an OSB production line. In this paper, Filtered Image Analysis (FIA) was used to measure fiber orientation at different resolutions, and results were compared with those for strand grid models. These grid models were adopted to investigate how the FIA technique measures orientation. A two-dimensional Fast Fourier Transform (FFT) analysis was also investigated as a comparative method for measuring fiber orientation. The following conclusions can be drawn: the FFT analysis measures the periodicity of lines and indicates the orientation of lines. The FIA measures the orientation of zones surrounded by lines and shows the orientation of the zones. Hence, the FFT analysis and the FIA analysis measure orientation differently. Both methods are able to measure the fiber orientation of the OSB from a high resolution image. In addition the FIA technique could also measure the fiber orientation from low-resolution images and from a distance of 2 meters. In conclusion, whilst the FFT method is able to analyse high resolution images successfully, the FIA method is superior for analysing low resolution images and the orientation of OSB strands under production condition.
Original languageEnglish
Pages (from-to)287-307
Number of pages21
JournalWood Science and Technology
Volume36
Issue number4
DOIs
Publication statusPublished - 2002

Fingerprint

oriented strandboards
Fiber reinforced materials
Fast Fourier transforms
Image analysis
Fourier transform
image analysis
Image resolution
image resolution
methodology
periodicity
product quality
fibre

Cite this

Fast Fourier transform and filtered image analyses of fiber orientation in OSB. / Nishimura, T; Ansell, M P.

In: Wood Science and Technology, Vol. 36, No. 4, 2002, p. 287-307.

Research output: Contribution to journalArticle

Nishimura, T ; Ansell, M P. / Fast Fourier transform and filtered image analyses of fiber orientation in OSB. In: Wood Science and Technology. 2002 ; Vol. 36, No. 4. pp. 287-307.
@article{58488da4927246348e39dcf7429ad974,
title = "Fast Fourier transform and filtered image analyses of fiber orientation in OSB",
abstract = "The objective of this paper is to investigate the relationship between resolution of images and measurement of fiber orientation in oriented strand board with the ultimate aim of optimising the fiber orientation and quality of the manufactured product. An important consideration has been the capture of images from a distance of 2 meters corresponding to conditions on an OSB production line. In this paper, Filtered Image Analysis (FIA) was used to measure fiber orientation at different resolutions, and results were compared with those for strand grid models. These grid models were adopted to investigate how the FIA technique measures orientation. A two-dimensional Fast Fourier Transform (FFT) analysis was also investigated as a comparative method for measuring fiber orientation. The following conclusions can be drawn: the FFT analysis measures the periodicity of lines and indicates the orientation of lines. The FIA measures the orientation of zones surrounded by lines and shows the orientation of the zones. Hence, the FFT analysis and the FIA analysis measure orientation differently. Both methods are able to measure the fiber orientation of the OSB from a high resolution image. In addition the FIA technique could also measure the fiber orientation from low-resolution images and from a distance of 2 meters. In conclusion, whilst the FFT method is able to analyse high resolution images successfully, the FIA method is superior for analysing low resolution images and the orientation of OSB strands under production condition.",
author = "T Nishimura and Ansell, {M P}",
note = "ID number: ISI:000177614600001",
year = "2002",
doi = "10.1007/s002260100114",
language = "English",
volume = "36",
pages = "287--307",
journal = "Wood Science and Technology",
issn = "0043-7719",
publisher = "Springer Verlag",
number = "4",

}

TY - JOUR

T1 - Fast Fourier transform and filtered image analyses of fiber orientation in OSB

AU - Nishimura, T

AU - Ansell, M P

N1 - ID number: ISI:000177614600001

PY - 2002

Y1 - 2002

N2 - The objective of this paper is to investigate the relationship between resolution of images and measurement of fiber orientation in oriented strand board with the ultimate aim of optimising the fiber orientation and quality of the manufactured product. An important consideration has been the capture of images from a distance of 2 meters corresponding to conditions on an OSB production line. In this paper, Filtered Image Analysis (FIA) was used to measure fiber orientation at different resolutions, and results were compared with those for strand grid models. These grid models were adopted to investigate how the FIA technique measures orientation. A two-dimensional Fast Fourier Transform (FFT) analysis was also investigated as a comparative method for measuring fiber orientation. The following conclusions can be drawn: the FFT analysis measures the periodicity of lines and indicates the orientation of lines. The FIA measures the orientation of zones surrounded by lines and shows the orientation of the zones. Hence, the FFT analysis and the FIA analysis measure orientation differently. Both methods are able to measure the fiber orientation of the OSB from a high resolution image. In addition the FIA technique could also measure the fiber orientation from low-resolution images and from a distance of 2 meters. In conclusion, whilst the FFT method is able to analyse high resolution images successfully, the FIA method is superior for analysing low resolution images and the orientation of OSB strands under production condition.

AB - The objective of this paper is to investigate the relationship between resolution of images and measurement of fiber orientation in oriented strand board with the ultimate aim of optimising the fiber orientation and quality of the manufactured product. An important consideration has been the capture of images from a distance of 2 meters corresponding to conditions on an OSB production line. In this paper, Filtered Image Analysis (FIA) was used to measure fiber orientation at different resolutions, and results were compared with those for strand grid models. These grid models were adopted to investigate how the FIA technique measures orientation. A two-dimensional Fast Fourier Transform (FFT) analysis was also investigated as a comparative method for measuring fiber orientation. The following conclusions can be drawn: the FFT analysis measures the periodicity of lines and indicates the orientation of lines. The FIA measures the orientation of zones surrounded by lines and shows the orientation of the zones. Hence, the FFT analysis and the FIA analysis measure orientation differently. Both methods are able to measure the fiber orientation of the OSB from a high resolution image. In addition the FIA technique could also measure the fiber orientation from low-resolution images and from a distance of 2 meters. In conclusion, whilst the FFT method is able to analyse high resolution images successfully, the FIA method is superior for analysing low resolution images and the orientation of OSB strands under production condition.

U2 - 10.1007/s002260100114

DO - 10.1007/s002260100114

M3 - Article

VL - 36

SP - 287

EP - 307

JO - Wood Science and Technology

JF - Wood Science and Technology

SN - 0043-7719

IS - 4

ER -