WO1988002097A3 - Process for extending the resolution of a line or matrix camera - Google Patents

Process for extending the resolution of a line or matrix camera Download PDF

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Publication number
WO1988002097A3
WO1988002097A3 PCT/DE1987/000423 DE8700423W WO8802097A3 WO 1988002097 A3 WO1988002097 A3 WO 1988002097A3 DE 8700423 W DE8700423 W DE 8700423W WO 8802097 A3 WO8802097 A3 WO 8802097A3
Authority
WO
WIPO (PCT)
Prior art keywords
resolution
interpolation
fringe
camera
shadow
Prior art date
Application number
PCT/DE1987/000423
Other languages
German (de)
French (fr)
Other versions
WO1988002097A2 (en
Inventor
Tilo Pfeifer
Martin Molitor
Original Assignee
Tilo Pfeifer
Martin Molitor
Fraunhofer Ges Forschung
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 Tilo Pfeifer, Martin Molitor, Fraunhofer Ges Forschung filed Critical Tilo Pfeifer
Priority to DE8787906154T priority Critical patent/DE3775218D1/en
Priority to AT87906154T priority patent/ATE70353T1/en
Publication of WO1988002097A2 publication Critical patent/WO1988002097A2/en
Publication of WO1988002097A3 publication Critical patent/WO1988002097A3/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
    • G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
    • G01B11/024—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness by means of diode-array scanning

Abstract

Process and device for extending the resolution of a line or matrix camera comprising an electronic evaluation circuit. During imaging of a non-transparent object by the transmitted light process onto the semi-conductor picture-taking unit of such a camera, and during digitalization of the grey values on a shadow fringe, an interpolation is made between the two image elements concerned by this fringe transition. For this an electronic evaluation circuit is used which comprises at least two parallel shift registers, a hardware calculating circuit with memory cells and a clock. In this way an extension of the resolution of a semi-conductor camera is extended by interpolation between the two image points of the shadow fringe transition, the first of which is located above and the second below a defined threshold or vice versa. This interpolation makes it possible to perform a propositional calculation relating to the position of a shade structure, or any light/dark distribution in a resolution lying above the local frequency of the picture-taking unit. This calculation is performed with an ROM in which already a result is stored for each input combination possible, in order to then allow interpolation in the image element cycle.
PCT/DE1987/000423 1986-09-20 1987-09-18 Process for extending the resolution of a line or matrix camera WO1988002097A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE8787906154T DE3775218D1 (en) 1986-09-20 1987-09-18 METHOD FOR EXTENDING THE RESOLUTION OF A LINE OR MATRIX CAMERA.
AT87906154T ATE70353T1 (en) 1986-09-20 1987-09-18 METHOD OF ENHANCING THE RESOLUTION OF A LINE OR MATRIX CAMERA.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3632070 1986-09-20
DEP3632070.6 1986-09-20

Publications (2)

Publication Number Publication Date
WO1988002097A2 WO1988002097A2 (en) 1988-03-24
WO1988002097A3 true WO1988002097A3 (en) 1988-04-07

Family

ID=6310025

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1987/000423 WO1988002097A2 (en) 1986-09-20 1987-09-18 Process for extending the resolution of a line or matrix camera

Country Status (5)

Country Link
EP (1) EP0324757B1 (en)
JP (1) JPH02500684A (en)
AT (1) ATE70353T1 (en)
DE (2) DE3731531A1 (en)
WO (1) WO1988002097A2 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4872757A (en) * 1988-04-20 1989-10-10 Ball Corporation Optical convex surface profiling and gauging apparatus and method therefor
CA2006129C (en) * 1988-12-21 1994-03-08 Sandra Lee Madden Quartz lamp envelope with molybdenum foil having oxidation-resistant surface formed by ion implantation
NO168151B3 (en) * 1989-08-14 2008-10-20 Torbjorn Kvassheim Method of counting fish and counting apparatus for carrying out the method.
WO1991006827A1 (en) * 1989-10-24 1991-05-16 Australian Wool Testing Authority Ltd. Image analysis
DE4308082A1 (en) * 1993-03-13 1994-09-15 Gerhard Dr Kleemann Method and device for the optical measurement of objects in a plane
DE4313258A1 (en) * 1993-04-23 1994-10-27 Beiersdorf Ag Method and device for the quantitative measurement of the texture of the human skin surface by means of registration, reproduction and analysis of image information
DE4438014C2 (en) * 1994-10-25 1997-07-31 Bodenseewerk Geraetetech Device for measuring the length of moving parts
DE19500817C1 (en) * 1995-01-13 1996-02-22 Zeiss Carl Jena Gmbh Edge position measurement method for light-dark structure
US6304190B1 (en) 1997-06-28 2001-10-16 Leopold Kostal Gmbh & Co. Kg Method for determining the absolute angular position of the steering wheel of a motor vehicle, and optoelecronic steering angle sensor
DE19830395A1 (en) 1998-07-08 2000-01-13 Schlafhorst & Co W Process for the contactless measurement of strand-like fiber material
DE19962701A1 (en) * 1999-12-23 2001-06-28 Sick Ag Method for determining the position of a light spot on a row of photodiodes
JP4496092B2 (en) * 2005-01-12 2010-07-07 信越化学工業株式会社 Method and apparatus for manufacturing optical fiber preform

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2058344A (en) * 1979-09-07 1981-04-08 Diffracto Ltd Electro-optical Inspection of Workpieces
FR2512945A1 (en) * 1981-09-14 1983-03-18 Utilisation Ration Gaz Automatic gas cylinder shape checking system - utilises measurement of separation between two focussed light spots from beam aimed at cylinder profile
JPS5999304A (en) * 1982-11-30 1984-06-08 Asahi Optical Co Ltd Method and apparatus for comparing and measuring length by using laser light of microscope system

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1536022A (en) * 1977-01-10 1978-12-13 Integrated Photomatrix Ltd Measurement of position using an array of photosensitive elements
US4394683A (en) * 1980-06-26 1983-07-19 Diffracto Ltd. New photodetector array based optical measurement systems
JPS5853704A (en) * 1981-09-26 1983-03-30 Nippon Kogaku Kk <Nikon> Position detecting device
DD201500B1 (en) * 1981-10-23 1987-01-21 Woschni Hans Guenter METHOD FOR DETERMINING THE POSITION OF AN OPTICALLY ACTIVE STRUCTURE
DD208858A1 (en) * 1982-09-01 1984-04-11 Woschni Hans Guenter METHOD FOR MEASURING THE PLACE OF MOVING OPTICALLY EFFECTIVE STRUCTURES USING PHOTOEMPFAENGER ARRAYS
DD217621A1 (en) * 1983-07-20 1985-01-16 Univ Schiller Jena DEVICE FOR THE FOTOMETRIC STRUCTURE ORDER IDENTIFICATION WITH A PHOTO MEMPARATOR ARRAY

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2058344A (en) * 1979-09-07 1981-04-08 Diffracto Ltd Electro-optical Inspection of Workpieces
FR2512945A1 (en) * 1981-09-14 1983-03-18 Utilisation Ration Gaz Automatic gas cylinder shape checking system - utilises measurement of separation between two focussed light spots from beam aimed at cylinder profile
JPS5999304A (en) * 1982-11-30 1984-06-08 Asahi Optical Co Ltd Method and apparatus for comparing and measuring length by using laser light of microscope system

Also Published As

Publication number Publication date
DE3731531C2 (en) 1990-05-23
WO1988002097A2 (en) 1988-03-24
DE3775218D1 (en) 1992-01-23
ATE70353T1 (en) 1991-12-15
EP0324757B1 (en) 1991-12-11
JPH02500684A (en) 1990-03-08
DE3731531A1 (en) 1988-04-07
EP0324757A1 (en) 1989-07-26

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