JPS55162179A - Picture processing method - Google Patents
Picture processing methodInfo
- Publication number
- JPS55162179A JPS55162179A JP6904079A JP6904079A JPS55162179A JP S55162179 A JPS55162179 A JP S55162179A JP 6904079 A JP6904079 A JP 6904079A JP 6904079 A JP6904079 A JP 6904079A JP S55162179 A JPS55162179 A JP S55162179A
- Authority
- JP
- Japan
- Prior art keywords
- picture
- level
- forecasted
- constitution
- density
- 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
- 238000003672 processing method Methods 0.000 title 1
- 238000004364 calculation method Methods 0.000 abstract 1
- 238000013139 quantization Methods 0.000 abstract 1
Classifications
-
- 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
- H04N1/40075—Descreening, i.e. converting a halftone signal into a corresponding continuous-tone signal; Rescreening, i.e. combined descreening and halftoning
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T3/00—Geometric image transformations in the plane of the image
- G06T3/40—Scaling of whole images or parts thereof, e.g. expanding or contracting
-
- 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
- H04N1/405—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels
- H04N1/4051—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels producing a dispersed dots halftone pattern, the dots having substantially the same size
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Image Processing (AREA)
- Facsimile Image Signal Circuits (AREA)
- Editing Of Facsimile Originals (AREA)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6904079A JPS55162179A (en) | 1979-06-02 | 1979-06-02 | Picture processing method |
DE19803020455 DE3020455A1 (de) | 1979-06-02 | 1980-05-29 | Bildverarbeitungsverfahren |
US06/155,179 US4393452A (en) | 1979-06-02 | 1980-06-02 | Method of reproducing a picture having improved resolution |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6904079A JPS55162179A (en) | 1979-06-02 | 1979-06-02 | Picture processing method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55162179A true JPS55162179A (en) | 1980-12-17 |
JPS6255344B2 JPS6255344B2 (ja) | 1987-11-19 |
Family
ID=13391066
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6904079A Granted JPS55162179A (en) | 1979-06-02 | 1979-06-02 | Picture processing method |
Country Status (3)
Country | Link |
---|---|
US (1) | US4393452A (ja) |
JP (1) | JPS55162179A (ja) |
DE (1) | DE3020455A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57141175A (en) * | 1981-02-26 | 1982-09-01 | Ricoh Co Ltd | Gradation control facsimile equipment |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59205874A (ja) * | 1983-05-10 | 1984-11-21 | Canon Inc | 画像デ−タ圧縮装置 |
JPS60180388A (ja) * | 1984-02-28 | 1985-09-14 | Kokusai Denshin Denwa Co Ltd <Kdd> | 符号化された画像信号の再量子化方法 |
US4724446A (en) * | 1985-01-31 | 1988-02-09 | Kabushiki Kaisha Toshiba | Thermal transfer printing apparatus |
US4723298A (en) * | 1985-03-27 | 1988-02-02 | Fingermatrix, Inc. | Image compression technique |
US4758897A (en) * | 1985-04-30 | 1988-07-19 | Konishiroku Photo Industry Co., Ltd. | Method and apparatus for estimating halftone image from binary image |
DE3838730C2 (de) * | 1987-11-16 | 1994-07-28 | Canon Kk | Verfahren und Vorrichtung zur Bildverarbeitung |
US5150429A (en) * | 1987-12-17 | 1992-09-22 | Eastman Kodak Company | Image processor with error diffusion modulated threshold matrix |
US5043815A (en) * | 1988-01-29 | 1991-08-27 | Canon Kabushiki Kaisha | Video signal processing device |
US5107346A (en) * | 1988-10-14 | 1992-04-21 | Bowers Imaging Technologies, Inc. | Process for providing digital halftone images with random error diffusion |
US5121446A (en) * | 1989-02-10 | 1992-06-09 | Canon Kabushiki Kaisha | Image processing apparatus capable of obtaining multi-level data |
US5051841A (en) * | 1989-10-16 | 1991-09-24 | Bowers Imaging Technologies, Inc. | Process for providing digital halftone images with random error diffusion |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52104017A (en) * | 1976-02-27 | 1977-09-01 | Oki Electric Ind Co Ltd | Recorded picture correction method |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3462547A (en) * | 1966-09-06 | 1969-08-19 | Stanford Research Inst | Data processing system for signals obtained from a video scanner |
JPS547536B2 (ja) * | 1973-11-09 | 1979-04-07 | ||
US4150401A (en) * | 1975-10-03 | 1979-04-17 | Kokusai Denshin Denwa Kabushiki Kaisha | Facsimile signal converter |
US4124870A (en) * | 1977-03-31 | 1978-11-07 | International Business Machines Corporation | Method for improving print quality of coarse-scan/fine-print character reproduction |
FR2386213A1 (fr) * | 1977-03-31 | 1978-10-27 | Ibm | Procede de reproduction a resolution fine a partir d'un balayage a resolution grossiere |
FR2391610A1 (fr) * | 1977-05-16 | 1978-12-15 | Matra | Perfectionnements aux procedes et dispositifs de restitution et de reproduction d'images |
US4127873A (en) * | 1977-05-20 | 1978-11-28 | Rca Corporation | Image resolution enhancement method and apparatus |
US4184206A (en) * | 1978-03-07 | 1980-01-15 | Hughes Aircraft Company | Subpixel X-Y coordinate encoding |
US4215414A (en) * | 1978-03-07 | 1980-07-29 | Hughes Aircraft Company | Pseudogaussian video output processing for digital display |
US4214277A (en) * | 1979-02-02 | 1980-07-22 | Xerox Corporation | Halftone implementation apparatus |
JPS55120265A (en) * | 1979-03-07 | 1980-09-16 | Ricoh Co Ltd | Picture forecasting restoring method |
-
1979
- 1979-06-02 JP JP6904079A patent/JPS55162179A/ja active Granted
-
1980
- 1980-05-29 DE DE19803020455 patent/DE3020455A1/de active Granted
- 1980-06-02 US US06/155,179 patent/US4393452A/en not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52104017A (en) * | 1976-02-27 | 1977-09-01 | Oki Electric Ind Co Ltd | Recorded picture correction method |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57141175A (en) * | 1981-02-26 | 1982-09-01 | Ricoh Co Ltd | Gradation control facsimile equipment |
JPH0230224B2 (ja) * | 1981-02-26 | 1990-07-05 | Ricoh Kk |
Also Published As
Publication number | Publication date |
---|---|
DE3020455A1 (de) | 1980-12-04 |
JPS6255344B2 (ja) | 1987-11-19 |
DE3020455C2 (ja) | 1990-08-09 |
US4393452A (en) | 1983-07-12 |
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