FR2410401A1 - IMAGE SIGNAL ENCODER DEVICE - Google Patents
IMAGE SIGNAL ENCODER DEVICEInfo
- Publication number
- FR2410401A1 FR2410401A1 FR7833585A FR7833585A FR2410401A1 FR 2410401 A1 FR2410401 A1 FR 2410401A1 FR 7833585 A FR7833585 A FR 7833585A FR 7833585 A FR7833585 A FR 7833585A FR 2410401 A1 FR2410401 A1 FR 2410401A1
- Authority
- FR
- France
- Prior art keywords
- image signal
- image
- signal encoder
- encoder device
- resolution component
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/90—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using coding techniques not provided for in groups H04N19/10-H04N19/85, e.g. fractals
- H04N19/98—Adaptive-dynamic-range coding [ADRC]
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Image Processing (AREA)
Abstract
APPAREIL CODEUR DE SIGNAUX D'IMAGE. UN CADRE D'IMAGE A ECHELLE DE GRIS EST DIVISE EN BLOCS DANS CHACUN DESQUELS LA LUNINANCE MOYENNE D'ELEMENTS D'IMAGE SERT DE VALEUR DE SEUIL DE COMPARAISON AVEC CHAQUE SIGNAL D'IMAGE EN VUE DE SA CLASSIFICATION EN 0 OU 1 SUIVANT SA GRANDEUR ET DE LA FORMATION D'UNE COMPOSANTE DE RESOLUTION. EN FONCTION DE CELLE-CI ET DE CHAQUE SIGNAL D'ELEMENT D'IMAGE, ON CALCULE DEUX COMPOSANTES DE GRIS, QUE L'ON UTILISE AVEC LA COMPOSANTE DE RESOLUTION COMME SORTIES CODEES POUR CHAQUE BLOC. APPLICABLE NOTAMMENT AU CODAGE D'IMAGES FIXES.IMAGE SIGNAL ENCODER APPARATUS. A GRAY SCALE IMAGE FRAME IS DIVIDED INTO BLOCKS IN WHICH THE AVERAGE LUNINANCE OF IMAGE ELEMENTS SERVES AS THE THRESHOLD VALUE OF COMPARISON WITH EACH IMAGE SIGNAL IN VIEW OF ITS CLASSIFICATION IN 0 OR 1 ACCORDING TO ITS SIZE AND THE FORMATION OF A RESOLUTION COMPONENT. AS A FUNCTION OF THIS AND EACH IMAGE ELEMENT SIGNAL, TWO GRAY COMPONENTS ARE CALCULATED, USED WITH THE RESOLUTION COMPONENT AS THE CODED OUTPUTS FOR EACH BLOCK. APPLICABLE IN PARTICULAR TO THE CODING OF STILL IMAGES.
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14238977A JPS5474623A (en) | 1977-11-28 | 1977-11-28 | Coding processing system for video signal |
JP639078A JPS5499514A (en) | 1978-01-24 | 1978-01-24 | Encoding process system for picture signal |
JP638978A JPS5499513A (en) | 1978-01-24 | 1978-01-24 | Encoding system of picture signal |
JP638878A JPS5499512A (en) | 1978-01-24 | 1978-01-24 | Encoding/decoding process system for picture signal |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2410401A1 true FR2410401A1 (en) | 1979-06-22 |
FR2410401B1 FR2410401B1 (en) | 1984-06-29 |
Family
ID=27454474
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7833585A Granted FR2410401A1 (en) | 1977-11-28 | 1978-11-28 | IMAGE SIGNAL ENCODER DEVICE |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE2851481C2 (en) |
FR (1) | FR2410401A1 (en) |
GB (1) | GB2009568B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2437124A1 (en) * | 1978-09-19 | 1980-04-18 | Western Electric Co | DIGITAL ENCODER FOR TRANSMISSION OF FAC-SIMILES |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4319267A (en) * | 1979-02-16 | 1982-03-09 | Nippon Telegraph And Telephone Public Corporation | Picture coding and/or decoding equipment |
DE3043521A1 (en) * | 1980-11-18 | 1982-06-24 | Agfa-Gevaert Ag, 5090 Leverkusen | Digital processing of document scan - uses nonlinearly encoded digital signal to give image-improving weighting |
US4409623A (en) * | 1981-01-31 | 1983-10-11 | Nippon Telegraph & Telephone Public Corporation | Method and equipment for processing gray scale facsimile signal |
GB2129652B (en) * | 1982-10-27 | 1986-06-04 | Matsushita Electric Ind Co Ltd | Method and apparatus for processing image signal |
GB2149994B (en) * | 1983-11-14 | 1987-05-20 | Matsushita Electric Ind Co Ltd | Method and apparatus for processing video signals |
JPS6186834A (en) * | 1984-10-04 | 1986-05-02 | Olympus Optical Co Ltd | Transfer device for picture data |
GB2173675A (en) * | 1985-03-22 | 1986-10-15 | Steven Henry Lerman | Communication system |
GB2238928B (en) * | 1989-09-05 | 1994-06-08 | Canon Kk | Image data converting method and image processing apparatus |
DE4027897C2 (en) * | 1989-09-05 | 1996-07-18 | Canon Kk | Image processing device |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3403226A (en) * | 1965-09-30 | 1968-09-24 | Bell Telephone Labor Inc | Reduced bandwidth dual mode encoding of video signals |
US3940555A (en) * | 1972-08-23 | 1976-02-24 | Kokusai Denshin Denwa Kabushiki Kaisha | Picture signal transmission system |
US3984626A (en) * | 1975-08-01 | 1976-10-05 | Bell Telephone Laboratories, Incorporated | Picture signal coder |
FR2329124A1 (en) * | 1975-10-24 | 1977-05-20 | Telecommunications Sa | MATRIX-TRANSFORMED IMAGE ENCODER-DECODER WITH WEIGHTING OF THE CONTRIBUTIONS OF THE IMAGE POINTS TO THE FORMATION OF THE TRANSFORMATION |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2020639A1 (en) * | 1970-04-28 | 1971-11-18 | Bosch Elektronik Gmbh | Method for the electrical transmission of original images |
US4032977A (en) * | 1976-06-03 | 1977-06-28 | Xerox Corporation | Gray scale interpolation technique |
-
1978
- 1978-11-20 GB GB7845201A patent/GB2009568B/en not_active Expired
- 1978-11-28 FR FR7833585A patent/FR2410401A1/en active Granted
- 1978-11-28 DE DE19782851481 patent/DE2851481C2/en not_active Expired
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3403226A (en) * | 1965-09-30 | 1968-09-24 | Bell Telephone Labor Inc | Reduced bandwidth dual mode encoding of video signals |
US3940555A (en) * | 1972-08-23 | 1976-02-24 | Kokusai Denshin Denwa Kabushiki Kaisha | Picture signal transmission system |
US3984626A (en) * | 1975-08-01 | 1976-10-05 | Bell Telephone Laboratories, Incorporated | Picture signal coder |
FR2329124A1 (en) * | 1975-10-24 | 1977-05-20 | Telecommunications Sa | MATRIX-TRANSFORMED IMAGE ENCODER-DECODER WITH WEIGHTING OF THE CONTRIBUTIONS OF THE IMAGE POINTS TO THE FORMATION OF THE TRANSFORMATION |
Non-Patent Citations (1)
Title |
---|
EXBK/78 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2437124A1 (en) * | 1978-09-19 | 1980-04-18 | Western Electric Co | DIGITAL ENCODER FOR TRANSMISSION OF FAC-SIMILES |
Also Published As
Publication number | Publication date |
---|---|
GB2009568A (en) | 1979-06-13 |
GB2009568B (en) | 1982-03-24 |
DE2851481C2 (en) | 1982-05-06 |
DE2851481A1 (en) | 1979-05-31 |
FR2410401B1 (en) | 1984-06-29 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
FR2410401A1 (en) | IMAGE SIGNAL ENCODER DEVICE | |
FR2364511A1 (en) | DETAIL DETECTOR OF A BINARY IMAGE | |
FR2370394A1 (en) | PERFECTED DATA TRANSMISSION SYSTEM WITH ANALOGUE-PULSE-DIGITAL CONVERSION | |
FR2401404A1 (en) | MULTIPLE-SEGMENT-CHARACTER DISPLAY MEASURING APPARATUS AND ITS OPERATING PROCEDURE | |
FR2395560A1 (en) | CONTROL AND SURVEILLANCE SYSTEM | |
EP0386439A3 (en) | Angle sensor for determining the rotation of a shaft | |
FR2660138B1 (en) | DEVICE FOR CODING / DECODING IMAGE SIGNALS. | |
FR2517092B1 (en) | DEVICE FOR DYNAMICALLY ADJUSTING A BLACK / WHITE DISCRIMINATION THRESHOLD WHEN PROCESSING GRAY VALUE IMAGES | |
FR2437125A1 (en) | DEVICE FOR PROCESSING AN IMAGE ANALYSIS SIGNAL | |
FR2353866A1 (en) | SIGNAL SENSOR, SUCH AS A SISMOGRAPH, USABLE AT THE SEA BOTTOM | |
FR2482813B1 (en) | IMAGE AND SOUND SIGNAL CODING AND DEVICE | |
FR2314584A1 (en) | IMAGE SENSOR DEVICE | |
KR910012673A (en) | Distance measuring device | |
US4539587A (en) | Shift register driven video measurement system for microcomputer | |
BE898990A (en) | DEVICE FOR CONVERTING AN ANALOGUE VIDEO SIGNAL INTO A TWO-LEVEL SIGNAL | |
BE608863A (en) | Apparatus for encoding pitch information in a "vocoder" system. | |
FR2001922A1 (en) | COLOR IMAGE SIGNAL GENERATOR | |
DE4427820C2 (en) | Process for the contactless measurement of angular velocities and the period of oscillating movements | |
DE19527609A1 (en) | Bicycle computer for measuring average speeds and distance for touring cyclist | |
US4584605A (en) | Digital hysteresis for video measurement and processing system | |
FR2356217A1 (en) | CODED WHEEL FOR MEASURING DEVICE | |
SU696277A1 (en) | Device for measuring the diameter of rolling circle of rolling stock wheel | |
JPS568958A (en) | Facsimile equipment | |
STORY et al. | The effect of training data variability on classification accuracy | |
SU991492A1 (en) | Speech signal recognition method |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
TP | Transmission of property | ||
CA | Change of address |