FR2455322A1 - IMAGE PROCESSING DEVICE IN AN INTEGRATED CIRCUIT - Google Patents
IMAGE PROCESSING DEVICE IN AN INTEGRATED CIRCUITInfo
- 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
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
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.THE INVENTION RELATES TO AN IMAGE PROCESSING DEVICE MADE OF AN INTEGRATED CIRCUIT PAD. IT INCLUDES AN ANALYSIS MATRIX 22 ANALYZING AN IMAGE AND PRODUCING A BLACK AND WHITE IMAGE SIGNAL, A DEVICE 23, 24 FOR PROCESSING THE IMAGE SIGNAL IN A MANNER TO IMPROVE IT BY COMPARING IT WITH REFERENCE LEVELS BLACK AND BACKGROUND, AND A FILTER 31 WHICH ELIMINATES ISOLATED SIGNALS OF WHITE OR BLACK THAT DO NOT REPRESENT THE IMAGE. THE INVENTION APPLIES IN PARTICULAR TO OPTICAL CHARACTER RECOGNITION DEVICES.
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 (en) | 1980-11-21 |
FR2455322B1 FR2455322B1 (en) | 1987-07-17 |
Family
ID=21862751
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8009094A Expired FR2455322B1 (en) | 1979-04-23 | 1980-04-23 | IMAGE PROCESSING DEVICE IN AN INTEGRATED CIRCUIT |
Country Status (5)
Country | Link |
---|---|
JP (1) | JPS55149571A (en) |
CA (1) | CA1164086A (en) |
DE (1) | DE3015637C2 (en) |
FR (1) | FR2455322B1 (en) |
GB (1) | GB2047934B (en) |
Families Citing this family (5)
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 (en) * | 1981-12-28 | 1984-08-08 | General Electric Company | Digital background normalizer using two dimensional integration techniques |
KR0181129B1 (en) * | 1995-06-17 | 1999-05-01 | 김광호 | Image processing apparatus |
Citations (4)
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)
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 (en) * | 1976-08-10 | 1978-02-14 | Philips Nv | SCHEME FOR TRANSMISSION OF CODED MESSAGES WITH A REDUCED TRANSMISSION TIME. |
JPS5533348A (en) * | 1978-08-31 | 1980-03-08 | Fuji Xerox Co Ltd | Noise elimination system |
-
1980
- 1980-04-01 CA CA000348925A patent/CA1164086A/en not_active Expired
- 1980-04-22 GB GB8013208A patent/GB2047934B/en not_active Expired
- 1980-04-22 JP JP5242580A patent/JPS55149571A/en active Pending
- 1980-04-23 FR FR8009094A patent/FR2455322B1/en not_active Expired
- 1980-04-23 DE DE3015637A patent/DE3015637C2/en not_active Expired
Patent Citations (4)
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 |
---|---|
DE3015637C2 (en) | 1985-10-31 |
JPS55149571A (en) | 1980-11-20 |
GB2047934B (en) | 1983-03-16 |
DE3015637A1 (en) | 1980-10-30 |
GB2047934A (en) | 1980-12-03 |
CA1164086A (en) | 1984-03-20 |
FR2455322B1 (en) | 1987-07-17 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |