SE464624B - Foerfarande foer identifiering av ett virkesstyckes ytegenskaper - Google Patents

Foerfarande foer identifiering av ett virkesstyckes ytegenskaper

Info

Publication number
SE464624B
SE464624B SE8700210A SE8700210A SE464624B SE 464624 B SE464624 B SE 464624B SE 8700210 A SE8700210 A SE 8700210A SE 8700210 A SE8700210 A SE 8700210A SE 464624 B SE464624 B SE 464624B
Authority
SE
Sweden
Prior art keywords
wavelength
imin
variable
imax
wavelength range
Prior art date
Application number
SE8700210A
Other languages
English (en)
Swedish (sv)
Other versions
SE8700210L (sv
SE8700210D0 (sv
Inventor
K Hirvonen
Original Assignee
Altim Control Ky
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Altim Control Ky filed Critical Altim Control Ky
Publication of SE8700210D0 publication Critical patent/SE8700210D0/xx
Publication of SE8700210L publication Critical patent/SE8700210L/xx
Publication of SE464624B publication Critical patent/SE464624B/sv

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/89—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles
    • G01N21/892—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles characterised by the flaw, defect or object feature examined
    • G01N21/898—Irregularities in textured or patterned surfaces, e.g. textiles, wood
    • G01N21/8986—Wood
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/21—Polarisation-affecting properties

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Textile Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
SE8700210A 1986-01-20 1987-01-20 Foerfarande foer identifiering av ett virkesstyckes ytegenskaper SE464624B (sv)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI860245A FI74815C (fi) 1986-01-20 1986-01-20 Foerfarande foer identifiering av en traeytas ytegenskaper.

Publications (3)

Publication Number Publication Date
SE8700210D0 SE8700210D0 (sv) 1987-01-20
SE8700210L SE8700210L (sv) 1987-07-22
SE464624B true SE464624B (sv) 1991-05-27

Family

ID=8521985

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8700210A SE464624B (sv) 1986-01-20 1987-01-20 Foerfarande foer identifiering av ett virkesstyckes ytegenskaper

Country Status (4)

Country Link
US (1) US4764017A (fi)
CA (1) CA1300922C (fi)
FI (1) FI74815C (fi)
SE (1) SE464624B (fi)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5357112A (en) * 1993-07-14 1994-10-18 Mississippi State University: Forest Products Laboratory Method for determining the presence of knots or voids in wood
GB2285861A (en) * 1994-01-19 1995-07-26 Peter Charles Matthews Optical detection of grain defects in lumber
US6118525A (en) * 1995-03-06 2000-09-12 Ade Optical Systems Corporation Wafer inspection system for distinguishing pits and particles
FI110545B (fi) * 1998-10-28 2003-02-14 Valtion Teknillinen Puuaineksen mittausmenetelmä ja -järjestely
US6486946B1 (en) 1999-06-15 2002-11-26 Ade Corporation Method for discriminating between holes in and particles on a film covering a substrate
US6624883B1 (en) * 2000-09-28 2003-09-23 National Research Council Of Canada Method of and apparatus for determining wood grain orientation
CA2478757A1 (fr) * 2004-08-06 2006-02-06 Mario Talbot Detection du bois bleui et de la pourriture sur le bois d'oeuvre
FR2897938B1 (fr) * 2006-02-24 2008-04-18 Peugeot Citroen Automobiles Sa Procede d'estimation de l'adherence d'une surface
FI122331B (fi) * 2006-06-30 2011-12-15 Teknosavo Oy Menetelmä puun tilavuuden mittaamiseen ja laadun tarkkailuun
US8780360B2 (en) * 2009-07-15 2014-07-15 Microtec S.R.L. Method and apparatus for identifying the orientation of wood fibres

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3694658A (en) * 1970-10-22 1972-09-26 Morvue Inc Veneer inspection system
GB1488841A (en) * 1974-01-18 1977-10-12 Plessey Co Ltd Optical detection apparatus
FI63835C (fi) * 1981-02-10 1983-08-10 Altim Control Ky Foerfarande foer identifiering av ett virkes ytegenskaper
US4525850A (en) * 1982-09-15 1985-06-25 Chrysler Corporation Fluid level sensor employing hot wire probe and digital sample and hold circuitry

Also Published As

Publication number Publication date
CA1300922C (en) 1992-05-19
SE8700210L (sv) 1987-07-22
FI74815B (fi) 1987-11-30
FI860245A0 (fi) 1986-01-20
US4764017A (en) 1988-08-16
FI860245A (fi) 1987-07-21
SE8700210D0 (sv) 1987-01-20
FI74815C (fi) 1988-03-10

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