CA1164086A - Image processing integrated circuit - Google Patents

Image processing integrated circuit

Info

Publication number
CA1164086A
CA1164086A CA000348925A CA348925A CA1164086A CA 1164086 A CA1164086 A CA 1164086A CA 000348925 A CA000348925 A CA 000348925A CA 348925 A CA348925 A CA 348925A CA 1164086 A CA1164086 A CA 1164086A
Authority
CA
Canada
Prior art keywords
black
white
image
output
integrated circuit
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.)
Expired
Application number
CA000348925A
Other languages
English (en)
French (fr)
Inventor
M. Duane Sanner
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.)
Recognition Equipment Inc
Original Assignee
Recognition Equipment Inc
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 Recognition Equipment Inc filed Critical Recognition Equipment Inc
Application granted granted Critical
Publication of CA1164086A publication Critical patent/CA1164086A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00—Arrangements for image or video recognition or understanding
    • G06V10/20—Image preprocessing
    • G06V10/28—Quantising the image, e.g. histogram thresholding for discrimination between background and foreground patterns
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00—Arrangements for image or video recognition or understanding
    • G06V10/20—Image preprocessing
    • G06V10/30—Noise filtering
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00—Arrangements for image or video recognition or understanding
    • G06V10/20—Image preprocessing
    • G06V10/36—Applying a local operator, i.e. means to operate on image points situated in the vicinity of a given point; Non-linear local filtering operations, e.g. median filtering

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Theoretical Computer Science (AREA)
  • Nonlinear Science (AREA)
  • Transforming Light Signals Into Electric Signals (AREA)
  • Image Processing (AREA)
  • Character Input (AREA)
  • Image Input (AREA)
  • Picture Signal Circuits (AREA)
  • Facsimile Image Signal Circuits (AREA)
CA000348925A 1979-04-23 1980-04-01 Image processing integrated circuit Expired CA1164086A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US3203479A 1979-04-23 1979-04-23
US032,034 1979-04-23

Publications (1)

Publication Number Publication Date
CA1164086A true CA1164086A (en) 1984-03-20

Family

ID=21862751

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000348925A Expired CA1164086A (en) 1979-04-23 1980-04-01 Image processing integrated circuit

Country Status (5)

Country Link
JP (1) JPS55149571A (de)
CA (1) CA1164086A (de)
DE (1) DE3015637C2 (de)
FR (1) FR2455322B1 (de)
GB (1) GB2047934B (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4463381A (en) * 1980-04-16 1984-07-31 Eastman Kodak Company Image processing apparatus including a partitioned low pass channel
US4446484A (en) * 1981-04-16 1984-05-01 Eastman Kodak Company Image gradient detectors operating in a partitioned low-pass channel
US4517607A (en) * 1981-11-09 1985-05-14 Ricoh Company, Ltd. Method of and apparatus for compensating image in image reproduction system
EP0083213A3 (de) * 1981-12-28 1984-08-08 General Electric Company Digitaler Hintergrund-Normalisator mit Hilfe von Zweidimensionalen Integrationsmitteln
KR0181129B1 (ko) * 1995-06-17 1999-05-01 김광호 화상처리장치의 화소 이치화 장치 및 방법

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3394346A (en) * 1964-04-28 1968-07-23 Rca Corp Filter circuit
JPS48102926A (de) * 1972-04-07 1973-12-24
US3976973A (en) * 1974-01-07 1976-08-24 Recognition Equipment Incorporated Horizontal scan vertical simulation character reading
US3903543A (en) * 1974-01-16 1975-09-02 Bell Telephone Labor Inc Charge transfer device decoder and compander
US4075605A (en) * 1974-09-13 1978-02-21 Recognition Equipment Incorporated Character recognition unit
US3990044A (en) * 1975-07-07 1976-11-02 The Singer Company Symbol recognition enhancing apparatus
NL7608862A (nl) * 1976-08-10 1978-02-14 Philips Nv Stelsel voor de overdracht van gecodeerde berichten met een gereduceerde overdracht- tijd.
JPS5533348A (en) * 1978-08-31 1980-03-08 Fuji Xerox Co Ltd Noise elimination system

Also Published As

Publication number Publication date
GB2047934A (en) 1980-12-03
FR2455322A1 (fr) 1980-11-21
JPS55149571A (en) 1980-11-20
DE3015637A1 (de) 1980-10-30
DE3015637C2 (de) 1985-10-31
GB2047934B (en) 1983-03-16
FR2455322B1 (fr) 1987-07-17

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Legal Events

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