FR2304892A1 - Contour determination method for fragile objects - utilises simultaneous photographic recording of light and shade on object - Google Patents

Contour determination method for fragile objects - utilises simultaneous photographic recording of light and shade on object

Info

Publication number
FR2304892A1
FR2304892A1 FR7508739A FR7508739A FR2304892A1 FR 2304892 A1 FR2304892 A1 FR 2304892A1 FR 7508739 A FR7508739 A FR 7508739A FR 7508739 A FR7508739 A FR 7508739A FR 2304892 A1 FR2304892 A1 FR 2304892A1
Authority
FR
France
Prior art keywords
light
shade
photographic recording
utilises
determination method
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
FR7508739A
Other languages
French (fr)
Other versions
FR2304892B3 (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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR7508739A priority Critical patent/FR2304892A1/en
Publication of FR2304892A1 publication Critical patent/FR2304892A1/en
Application granted granted Critical
Publication of FR2304892B3 publication Critical patent/FR2304892B3/fr
Granted 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
    • G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
    • G01B11/25—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures by projecting a pattern, e.g. one or more lines, moiré fringes on the object
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C11/00—Photogrammetry or videogrammetry, e.g. stereogrammetry; Photographic surveying

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

Photographic recording of light and shade is employed to obtain the shape and dimensions of contours of an inaccessible object at a distance. This technique is used where moulding or mathematical determination is not possible on fragile or original objects. The shape and dimensions of a large object (10) are obtained by photographing (P1, P2) simultaneously areas of light and shade on the object when light is projected (70) onto it. The cameras (P1, P2) and light projector (70) are mounted on a carriage (72) which moves uniformly in a direction (74) perpendicular to the projection plane. The cameras are mounted equidistant from the object and photograph at a plane of projection (76) separating light and shade. The photographs are superimposed to reproduce the object for modelling.
FR7508739A 1975-03-20 1975-03-20 Contour determination method for fragile objects - utilises simultaneous photographic recording of light and shade on object Granted FR2304892A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7508739A FR2304892A1 (en) 1975-03-20 1975-03-20 Contour determination method for fragile objects - utilises simultaneous photographic recording of light and shade on object

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7508739A FR2304892A1 (en) 1975-03-20 1975-03-20 Contour determination method for fragile objects - utilises simultaneous photographic recording of light and shade on object

Publications (2)

Publication Number Publication Date
FR2304892A1 true FR2304892A1 (en) 1976-10-15
FR2304892B3 FR2304892B3 (en) 1977-07-01

Family

ID=9152833

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7508739A Granted FR2304892A1 (en) 1975-03-20 1975-03-20 Contour determination method for fragile objects - utilises simultaneous photographic recording of light and shade on object

Country Status (1)

Country Link
FR (1) FR2304892A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2310550A1 (en) * 1975-05-08 1976-12-03 United Technologies Corp SYSTEM FOR SURFACE SURFACING SURFACES
EP0222498A2 (en) * 1985-10-04 1987-05-20 Loughborough Consultants Limited Making measurements on a body
EP0278882A1 (en) * 1987-02-13 1988-08-17 DURET-INVENTEUR Société civile Process and apparatus for producing medical impression profiles
CN104197837A (en) * 2014-09-19 2014-12-10 福建师范大学 Non-contact type optical measuring method and device for measuring volume of objects with complicated surfaces

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2310550A1 (en) * 1975-05-08 1976-12-03 United Technologies Corp SYSTEM FOR SURFACE SURFACING SURFACES
EP0222498A2 (en) * 1985-10-04 1987-05-20 Loughborough Consultants Limited Making measurements on a body
EP0222498A3 (en) * 1985-10-04 1989-11-15 Loughborough Consultants Limited Making measurements on a body
EP0278882A1 (en) * 1987-02-13 1988-08-17 DURET-INVENTEUR Société civile Process and apparatus for producing medical impression profiles
FR2610821A1 (en) * 1987-02-13 1988-08-19 Hennson Int MEDICAL IMPRINT TAKING METHOD AND DEVICE FOR IMPLEMENTING THE SAME
CN104197837A (en) * 2014-09-19 2014-12-10 福建师范大学 Non-contact type optical measuring method and device for measuring volume of objects with complicated surfaces

Also Published As

Publication number Publication date
FR2304892B3 (en) 1977-07-01

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Legal Events

Date Code Title Description
ST Notification of lapse