JPS54144139A - Processing system for intermediate tone - Google Patents
Processing system for intermediate toneInfo
- Publication number
- JPS54144139A JPS54144139A JP5291178A JP5291178A JPS54144139A JP S54144139 A JPS54144139 A JP S54144139A JP 5291178 A JP5291178 A JP 5291178A JP 5291178 A JP5291178 A JP 5291178A JP S54144139 A JPS54144139 A JP S54144139A
- Authority
- JP
- Japan
- Prior art keywords
- picture element
- error
- adder
- fed
- picture
- 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.)
- Pending
Links
Landscapes
- Image Processing (AREA)
- Facsimile Image Signal Circuits (AREA)
Abstract
PURPOSE: To make easy to see for the reproduced picture, by reducing the repetitive production of the same pattern which is an obstacle, without lowering the resolution of the reproduced picture, when the picture element in which picture element concentration level for input picture element is constant, is continuous.
CONSTITUTION: The input picture element DIN from the scanner including the intermediate tone is inputted to the normalizing unit 30, it is separated into matrix shape, and fed to the adder 31 as the normalized value Xij. Further, after adding the normalized value Xij and the accumulated error eij at the adder 31, it is compared with the comparator 32 with the dither pattern Dkl of the threshold pattern prepared in advance, and the picture element output Yij=1 or Yij=0 is outputted with the result. Further, the picture element output(Yij=1 or 0) is given to the error dispersion unit 33, the error R is calculated based on the total concentration value Xij fed from the adder 31, the value dividing the content of the dispersion unit 33 with the dispersion coefficient is added, the accumulative error εij is fed to the adder 31. and the error E is dispersed to the dots at surrounding to make easy to see the reproducing picture.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5291178A JPS54144139A (en) | 1978-05-01 | 1978-05-01 | Processing system for intermediate tone |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5291178A JPS54144139A (en) | 1978-05-01 | 1978-05-01 | Processing system for intermediate tone |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54144139A true JPS54144139A (en) | 1979-11-10 |
Family
ID=12928006
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5291178A Pending JPS54144139A (en) | 1978-05-01 | 1978-05-01 | Processing system for intermediate tone |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54144139A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5967560A (en) * | 1982-10-08 | 1984-04-17 | Canon Inc | Color picture recording device |
JPS6074772A (en) * | 1983-09-29 | 1985-04-27 | Matsushita Electric Ind Co Ltd | Quantizing method of multi-value picture information |
JPS62239666A (en) * | 1986-04-10 | 1987-10-20 | Seiko Epson Corp | Binarization processor |
JPS62239667A (en) * | 1986-04-10 | 1987-10-20 | Seiko Epson Corp | Picture processor |
JPS63155955A (en) * | 1986-12-19 | 1988-06-29 | Matsushita Electric Ind Co Ltd | Picture signal processor |
JPH01256870A (en) * | 1988-04-06 | 1989-10-13 | Brother Ind Ltd | Half-tone image reproducing method |
JPH0222960A (en) * | 1988-07-12 | 1990-01-25 | Brother Ind Ltd | Image expressing method |
-
1978
- 1978-05-01 JP JP5291178A patent/JPS54144139A/en active Pending
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5967560A (en) * | 1982-10-08 | 1984-04-17 | Canon Inc | Color picture recording device |
JPS6074772A (en) * | 1983-09-29 | 1985-04-27 | Matsushita Electric Ind Co Ltd | Quantizing method of multi-value picture information |
JPH0126591B2 (en) * | 1983-09-29 | 1989-05-24 | Matsushita Electric Ind Co Ltd | |
JPS62239666A (en) * | 1986-04-10 | 1987-10-20 | Seiko Epson Corp | Binarization processor |
JPS62239667A (en) * | 1986-04-10 | 1987-10-20 | Seiko Epson Corp | Picture processor |
JPS63155955A (en) * | 1986-12-19 | 1988-06-29 | Matsushita Electric Ind Co Ltd | Picture signal processor |
JPH01256870A (en) * | 1988-04-06 | 1989-10-13 | Brother Ind Ltd | Half-tone image reproducing method |
JPH0222960A (en) * | 1988-07-12 | 1990-01-25 | Brother Ind Ltd | Image expressing method |
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