IT1245014B - SYSTEM FOR THE THREE-DIMENSIONAL MEASUREMENT OF SCULPTED SURFACES TO MATHEMATIZE - Google Patents

SYSTEM FOR THE THREE-DIMENSIONAL MEASUREMENT OF SCULPTED SURFACES TO MATHEMATIZE

Info

Publication number
IT1245014B
IT1245014B ITTO910052A ITTO910052A IT1245014B IT 1245014 B IT1245014 B IT 1245014B IT TO910052 A ITTO910052 A IT TO910052A IT TO910052 A ITTO910052 A IT TO910052A IT 1245014 B IT1245014 B IT 1245014B
Authority
IT
Italy
Prior art keywords
camera
points
lines
mathematize
dimensional measurement
Prior art date
Application number
ITTO910052A
Other languages
Italian (it)
Inventor
Roberto Maiocco
Caterina Cassolino
Guglielmo Raho
Original Assignee
Dea Spa
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 Dea Spa filed Critical Dea Spa
Priority to ITTO910052A priority Critical patent/IT1245014B/en
Publication of ITTO910052A0 publication Critical patent/ITTO910052A0/en
Priority to GB9126856A priority patent/GB2253052B/en
Priority to FR9116302A priority patent/FR2672119B3/en
Priority to DE4143193A priority patent/DE4143193A1/en
Priority to JP4040264A priority patent/JPH0626825A/en
Publication of ITTO910052A1 publication Critical patent/ITTO910052A1/en
Application granted granted Critical
Publication of IT1245014B publication Critical patent/IT1245014B/en

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
    • 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
    • G01B11/002—Measuring arrangements characterised by the use of optical techniques for measuring two or more coordinates
    • G01B11/005—Measuring arrangements characterised by the use of optical techniques for measuring two or more coordinates coordinate measuring machines
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/50—Depth or shape recovery
    • G06T7/55—Depth or shape recovery from multiple images
    • G06T7/593—Depth or shape recovery from multiple images from stereo images

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Theoretical Computer Science (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • A Measuring Device Byusing Mechanical Method (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)

Abstract

Viene descritto un sistema basato sull'abbinamento di una telecamera (10) ad una macchina di misura (5) in modo da fornire una completa libertà di posizionamento della telecamera all'interno del volume di misura della macchina, sostituendo la presa di punti manuale e la definizione delle traiettorie dei sistemi di misura tradizionali, utilizzanti palpatori, con una semplice inquadratura della porzione di superficie da misurare, dotata di linee a forte contrasto rispetto alla superficie stessa. Il sistema comprende un elaboratore di immagini (16) che controlla l'acquisizione di due differenti immagini della superficie, per localizzare le linee a forte contrasto. Un elaboratore stereo (17) provvede quindi a correlare fra loro i punti delle due immagini, a calcolare le coordinale tridimensionali di lati punti e le equazioni delle curve e delle superfici passanti per tali punti.Figura 2.A system based on the combination of a camera (10) with a measuring machine (5) is described in order to provide complete freedom of positioning of the camera within the measuring volume of the machine, replacing the manual point taking and the definition of the trajectories of traditional measuring systems, using palpators, with a simple framing of the portion of the surface to be measured, equipped with lines in strong contrast with respect to the surface itself. The system includes an image processor (16) which controls the acquisition of two different images of the surface, to locate the lines with strong contrast. A stereo processor (17) then correlates the points of the two images with each other, calculates the three-dimensional co-ordinates of the sides and the equations of the curves and surfaces passing through these points.

ITTO910052A 1991-01-29 1991-01-29 SYSTEM FOR THE THREE-DIMENSIONAL MEASUREMENT OF SCULPTED SURFACES TO MATHEMATIZE IT1245014B (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
ITTO910052A IT1245014B (en) 1991-01-29 1991-01-29 SYSTEM FOR THE THREE-DIMENSIONAL MEASUREMENT OF SCULPTED SURFACES TO MATHEMATIZE
GB9126856A GB2253052B (en) 1991-01-29 1991-12-18 A system for the measurement of three-dimensional surfaces to be represented mathematically
FR9116302A FR2672119B3 (en) 1991-01-29 1991-12-30 THREE-DIMENSIONAL SURFACE MEASUREMENT SYSTEM TO BE MATHEMATICALLY REPRESENTED AS WELL AS A MEASUREMENT METHOD AND CALIBRATION TEMPLATE OF THE MEASUREMENT SYSTEM.
DE4143193A DE4143193A1 (en) 1991-01-29 1991-12-30 SYSTEM FOR MATHEMATICALLY DETECTING THREE-DIMENSIONAL SURFACES
JP4040264A JPH0626825A (en) 1991-01-29 1992-01-29 System for measuring mathematically represented three-dimensional surface

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITTO910052A IT1245014B (en) 1991-01-29 1991-01-29 SYSTEM FOR THE THREE-DIMENSIONAL MEASUREMENT OF SCULPTED SURFACES TO MATHEMATIZE

Publications (3)

Publication Number Publication Date
ITTO910052A0 ITTO910052A0 (en) 1991-01-29
ITTO910052A1 ITTO910052A1 (en) 1992-07-29
IT1245014B true IT1245014B (en) 1994-09-13

Family

ID=11408835

Family Applications (1)

Application Number Title Priority Date Filing Date
ITTO910052A IT1245014B (en) 1991-01-29 1991-01-29 SYSTEM FOR THE THREE-DIMENSIONAL MEASUREMENT OF SCULPTED SURFACES TO MATHEMATIZE

Country Status (5)

Country Link
JP (1) JPH0626825A (en)
DE (1) DE4143193A1 (en)
FR (1) FR2672119B3 (en)
GB (1) GB2253052B (en)
IT (1) IT1245014B (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4327250C5 (en) * 1992-09-25 2008-11-20 Carl Zeiss Industrielle Messtechnik Gmbh Method for measuring coordinates on workpieces
DE4335121A1 (en) * 1993-10-17 1995-05-04 Robert Prof Dr Ing Massen Automatic area feedback in optical 3D digitisers
DE4440573A1 (en) * 1994-11-14 1996-05-15 Matallana Kielmann Michael Determining curvature, contour, and absolute coordinates of reflecting surface
GB9716240D0 (en) * 1997-07-31 1997-10-08 Tricorder Technology Plc Scanning apparatus and methods
EP0901105A1 (en) 1997-08-05 1999-03-10 Canon Kabushiki Kaisha Image processing apparatus
DE69823116D1 (en) 1997-08-05 2004-05-19 Canon Kk Image processing method and device
US6647146B1 (en) 1997-08-05 2003-11-11 Canon Kabushiki Kaisha Image processing apparatus
GB2371964A (en) * 2001-01-31 2002-08-07 Tct Internat Plc Surface imaging for patient positioning in radiotherapy
JP4639135B2 (en) * 2005-10-19 2011-02-23 株式会社ミツトヨ Probe observation device, surface texture measurement device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2642163A1 (en) * 1989-01-24 1990-07-27 Chazal Jacques ANGLE AND TRACING INSTRUMENT WITH DIRECT DISPLAY OF THE ANGLE AND / OR THE CORRESPONDING TRIGONOMETRIC VALUES

Also Published As

Publication number Publication date
ITTO910052A0 (en) 1991-01-29
DE4143193A1 (en) 1992-07-30
ITTO910052A1 (en) 1992-07-29
FR2672119B3 (en) 1993-05-14
GB2253052B (en) 1994-11-30
GB2253052A (en) 1992-08-26
FR2672119A1 (en) 1992-07-31
GB9126856D0 (en) 1992-02-19
JPH0626825A (en) 1994-02-04

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Legal Events

Date Code Title Description
0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19940331