DE1522773A1 - Automatische Messung und Auswertung von Schrift- und Bildgut-Eigenschaften - Google Patents

Automatische Messung und Auswertung von Schrift- und Bildgut-Eigenschaften

Info

Publication number
DE1522773A1
DE1522773A1 DE19651522773 DE1522773A DE1522773A1 DE 1522773 A1 DE1522773 A1 DE 1522773A1 DE 19651522773 DE19651522773 DE 19651522773 DE 1522773 A DE1522773 A DE 1522773A DE 1522773 A1 DE1522773 A1 DE 1522773A1
Authority
DE
Germany
Prior art keywords
pulse
circuit
voltage
line
width
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.)
Pending
Application number
DE19651522773
Other languages
German (de)
English (en)
Inventor
Jensen Roy Albert
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.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of DE1522773A1 publication Critical patent/DE1522773A1/de
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
    • G01J1/4209—Photoelectric exposure meters for determining the exposure time in recording or reproducing
    • G01J1/4223—Photoelectric exposure meters for determining the exposure time in recording or reproducing specially adapted for copy - or printing apparatus
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B27/00—Photographic printing apparatus
    • G03B27/72—Controlling or varying light intensity, spectral composition, or exposure time in photographic printing apparatus
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B29/00—Combinations of cameras, projectors or photographic printing apparatus with non-photographic non-optical apparatus, e.g. clocks or weapons; Cameras having the shape of other objects
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06G—ANALOGUE COMPUTERS
    • G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
    • G06G7/12—Arrangements for performing computing operations, e.g. operational amplifiers
    • G06G7/18—Arrangements for performing computing operations, e.g. operational amplifiers for integration or differentiation; for forming integrals
    • G06G7/184—Arrangements for performing computing operations, e.g. operational amplifiers for integration or differentiation; for forming integrals using capacitive elements
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00—Arrangements for image or video recognition or understanding
    • G06V10/98—Detection or correction of errors, e.g. by rescanning the pattern or by human intervention; Evaluation of the quality of the acquired patterns
    • G06V10/993—Evaluation of the quality of the acquired pattern
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/40—Picture signal circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Multimedia (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Mathematical Physics (AREA)
  • Signal Processing (AREA)
  • Software Systems (AREA)
  • Computer Hardware Design (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Testing Of Optical Devices Or Fibers (AREA)
DE19651522773 1964-12-23 1965-12-23 Automatische Messung und Auswertung von Schrift- und Bildgut-Eigenschaften Pending DE1522773A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US42071264A 1964-12-23 1964-12-23

Publications (1)

Publication Number Publication Date
DE1522773A1 true DE1522773A1 (de) 1969-10-16

Family

ID=23667550

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19651522773 Pending DE1522773A1 (de) 1964-12-23 1965-12-23 Automatische Messung und Auswertung von Schrift- und Bildgut-Eigenschaften

Country Status (4)

Country Link
US (2) US3464062A (enExample)
DE (1) DE1522773A1 (enExample)
FR (1) FR1464948A (enExample)
GB (1) GB1072009A (enExample)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3987413A (en) * 1975-01-22 1976-10-19 Xerox Corporation Detection system
US5404411A (en) * 1990-12-27 1995-04-04 Xerox Corporation Bitmap-image pattern matching apparatus for correcting bitmap errors in a printing system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1177774A (fr) * 1960-04-26 1959-04-29 Evans Electroselenium Ltd Perfectionnements aux appareils de comptage des petites particules
US3315229A (en) * 1963-12-31 1967-04-18 Ibm Blood cell recognizer
US3345502A (en) * 1964-08-14 1967-10-03 Robert H Berg Pulse analyzer computer

Also Published As

Publication number Publication date
FR1464948A (fr) 1967-01-06
GB1072009A (en) 1967-06-14
USB420712I5 (enExample)
US3464062A (en) 1969-08-26

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