GB2008887A - Method and apparatus for determining the rotational position of objects - Google Patents

Method and apparatus for determining the rotational position of objects

Info

Publication number
GB2008887A
GB2008887A GB7839076A GB7839076A GB2008887A GB 2008887 A GB2008887 A GB 2008887A GB 7839076 A GB7839076 A GB 7839076A GB 7839076 A GB7839076 A GB 7839076A GB 2008887 A GB2008887 A GB 2008887A
Authority
GB
United Kingdom
Prior art keywords
data
image
correlation
reference object
stores
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
GB7839076A
Other versions
GB2008887B (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BBC Brown Boveri AG Germany
BBC Brown Boveri France SA
Original Assignee
Brown Boveri und Cie AG Germany
BBC Brown Boveri France SA
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 Brown Boveri und Cie AG Germany, BBC Brown Boveri France SA filed Critical Brown Boveri und Cie AG Germany
Publication of GB2008887A publication Critical patent/GB2008887A/en
Application granted granted Critical
Publication of GB2008887B publication Critical patent/GB2008887B/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B21/00—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices
    • A63B21/02—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices using resilient force-resisters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
    • G01B11/022—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness by means of tv-camera scanning

Landscapes

  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biophysics (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Image Analysis (AREA)
  • Image Processing (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

Angular position of an object is determined by scanning an image of the object B and comparing the scanned data with stored data of a reference object GR. For a given radius, a set of circular scans is effected for different relative angular positions of the object image and reference object and for each scan the object image and reference object data are cross-correlated and integrated about the scanning circle. The correlation integral with the absolute extreme value gives the actual angular position of the object. The procedure may be repeated for different radii. Stores GSp and RSp for the object and reference object data are connected to multiplier M and integrator I and the data are recalled and the correlation controlled by correlation control circuit KSt, the extreme integral value being selected by stores Sp1 and Sp2 for the computed integrals and an associated comparator D3. <IMAGE>
GB7839076A 1977-10-04 1978-10-03 Method and apparatus for determining the rotational position of objects Expired GB2008887B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1213777A CH627959A5 (en) 1977-10-04 1977-10-04 METHOD AND DEVICE FOR DETERMINING THE ROTATION OF OBJECTS.

Publications (2)

Publication Number Publication Date
GB2008887A true GB2008887A (en) 1979-06-06
GB2008887B GB2008887B (en) 1982-09-22

Family

ID=4380234

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7839076A Expired GB2008887B (en) 1977-10-04 1978-10-03 Method and apparatus for determining the rotational position of objects

Country Status (9)

Country Link
EP (1) EP0007359A1 (en)
AT (1) AT381165B (en)
CH (1) CH627959A5 (en)
DE (1) DE2748604C2 (en)
FR (1) FR2405460A1 (en)
GB (1) GB2008887B (en)
IT (1) IT1099341B (en)
NL (1) NL7809854A (en)
SE (1) SE444237B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4668983A (en) * 1981-07-17 1987-05-26 W. R. Grace & Co. Optical inspection system

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3021625A1 (en) * 1980-06-09 1981-12-17 Canadian Patents And Development Ltd., Ottawa Target image plane coordinate video signalling system - scans x-y field in know raster pattern and obtains series of discrete output voltage pulses
DE3111728A1 (en) * 1981-03-25 1982-10-07 Philips Patentverwaltung Gmbh, 2000 Hamburg "TESTING PROCEDURE FOR WORKPIECES"
DE3203897A1 (en) * 1981-11-07 1983-05-19 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Device for detecting and processing characters and/or predetermined optical details
DE3234608A1 (en) * 1982-09-16 1984-03-22 Kraft, Hans Rainer, Dr.-Ing., 1000 Berlin Method and circuit arrangement for generating a position-independent object signature
DE3340705A1 (en) * 1982-11-22 1984-05-24 View Eng High-speed pattern recognition apparatus
JPS62267610A (en) * 1986-05-16 1987-11-20 Fuji Electric Co Ltd Detecting system for rotational angle of object pattern
JPH0810132B2 (en) * 1986-06-04 1996-01-31 富士電機株式会社 Target pattern rotation angle detection method
DE3913620A1 (en) * 1989-04-25 1990-10-31 Fraunhofer Ges Forschung IMAGE EVALUATION METHOD
DE10337733B4 (en) * 2003-08-11 2015-01-08 Traub Drehmaschinen Gmbh Method for detecting a spatial position of a known three-dimensional structure
DE102005032871A1 (en) 2005-07-14 2007-01-25 Leopold Kostal Gmbh & Co. Kg Method for determining the absolute angular position of the steering wheel of a motor vehicle

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3614736A (en) * 1968-05-21 1971-10-19 Ibm Pattern recognition apparatus and methods invariant to translation, scale change and rotation
US3618742A (en) * 1970-05-18 1971-11-09 Stanley J Blanchard Automatic object adjustment
US4004083A (en) * 1972-10-25 1977-01-18 Philip Chrislock Norem Method and apparatus for determining centroid coordinates and angular orientation of a surface
DE2531682A1 (en) * 1975-07-16 1977-02-03 Fraunhofer Ges Forschung Position recognition system using optical sensor - determines location and orientation of objects by means of circular optical scanning
US3986007A (en) * 1975-08-20 1976-10-12 The Bendix Corporation Method and apparatus for calibrating mechanical-visual part manipulating system
US4041286A (en) * 1975-11-20 1977-08-09 The Bendix Corporation Method and apparatus for detecting characteristic features of surfaces
CA1073111A (en) * 1975-11-28 1980-03-04 Bendix Corporation Method and apparatus for calibrating mechanical-visual part manipulating system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4668983A (en) * 1981-07-17 1987-05-26 W. R. Grace & Co. Optical inspection system

Also Published As

Publication number Publication date
AT381165B (en) 1986-09-10
EP0007359A1 (en) 1980-02-06
DE2748604A1 (en) 1979-04-05
CH627959A5 (en) 1982-02-15
FR2405460A1 (en) 1979-05-04
ATA709278A (en) 1986-01-15
DE2748604C2 (en) 1986-09-25
IT7828380A0 (en) 1978-10-03
IT1099341B (en) 1985-09-18
SE444237B (en) 1986-03-24
NL7809854A (en) 1979-04-06
SE7810317L (en) 1979-04-05
FR2405460B1 (en) 1983-12-02
GB2008887B (en) 1982-09-22

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Legal Events

Date Code Title Description
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee