FR2455322A1 - Dispositif de traitement d'images en circuit integre - Google Patents

Dispositif de traitement d'images en circuit integre

Info

Publication number
FR2455322A1
FR2455322A1 FR8009094A FR8009094A FR2455322A1 FR 2455322 A1 FR2455322 A1 FR 2455322A1 FR 8009094 A FR8009094 A FR 8009094A FR 8009094 A FR8009094 A FR 8009094A FR 2455322 A1 FR2455322 A1 FR 2455322A1
Authority
FR
France
Prior art keywords
integrated circuit
image
processing device
black
image processing
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
FR8009094A
Other languages
English (en)
Other versions
FR2455322B1 (fr
Inventor
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
Publication of FR2455322A1 publication Critical patent/FR2455322A1/fr
Application granted granted Critical
Publication of FR2455322B1 publication Critical patent/FR2455322B1/fr
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)

Abstract

L'INVENTION CONCERNE UN DISPOSITIF DE TRAITEMENT D'IMAGES REALISE EN UNE PASTILLE DE CIRCUIT INTEGRE. IL COMPORTE UNE MATRICE D'ANALYSE 22 ANALYSANT UNE IMAGE ET PRODUISANT UN SIGNAL D'IMAGE DU NOIR ET DU BLANC, UN DISPOSITIF 23, 24 DU TRAITEMENT DU SIGNAL D'IMAGE DE MANIERE A L'AMELIORER EN LE COMPARANT AVEC DES NIVEAUX DE REFERENCE DU NOIR ET DU FOND, ET UN FILTRE 31 QUI ELIMINE LES SIGNAUX ISOLES DU BLANC OU DU NOIR NE REPRESENTANT PAS L'IMAGE. L'INVENTION S'APPLIQUE NOTAMMENT A DES DISPOSITIFS DE RECONNAISSANCE OPTIQUE DES CARACTERES.
FR8009094A 1979-04-23 1980-04-23 Dispositif de traitement d'images en circuit integre Expired FR2455322B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US3203479A 1979-04-23 1979-04-23

Publications (2)

Publication Number Publication Date
FR2455322A1 true FR2455322A1 (fr) 1980-11-21
FR2455322B1 FR2455322B1 (fr) 1987-07-17

Family

ID=21862751

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8009094A Expired FR2455322B1 (fr) 1979-04-23 1980-04-23 Dispositif de traitement d'images en circuit integre

Country Status (5)

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

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 (fr) * 1981-12-28 1984-08-08 General Electric Company Normalisateur digital d'arrière-plan utilisant des techniques d'intégration bi-dimensionnelle
KR0181129B1 (ko) * 1995-06-17 1999-05-01 김광호 화상처리장치의 화소 이치화 장치 및 방법

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1078346A (en) * 1964-04-28 1967-08-09 Rca Corp Filter circuit
US3846754A (en) * 1972-04-07 1974-11-05 Hitachi Ltd Pattern pre-processing apparatus
US3947817A (en) * 1974-01-07 1976-03-30 Recognition Equipment Incorporated Hand operated optical character recognition wand
US3990044A (en) * 1975-07-07 1976-11-02 The Singer Company Symbol recognition enhancing apparatus

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
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

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1078346A (en) * 1964-04-28 1967-08-09 Rca Corp Filter circuit
US3846754A (en) * 1972-04-07 1974-11-05 Hitachi Ltd Pattern pre-processing apparatus
US3947817A (en) * 1974-01-07 1976-03-30 Recognition Equipment Incorporated Hand operated optical character recognition wand
US3990044A (en) * 1975-07-07 1976-11-02 The Singer Company Symbol recognition enhancing apparatus

Also Published As

Publication number Publication date
DE3015637A1 (de) 1980-10-30
GB2047934A (en) 1980-12-03
JPS55149571A (en) 1980-11-20
GB2047934B (en) 1983-03-16
DE3015637C2 (de) 1985-10-31
FR2455322B1 (fr) 1987-07-17
CA1164086A (fr) 1984-03-20

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Legal Events

Date Code Title Description
ST Notification of lapse