JPS6418369A - Picture signal processor - Google Patents
Picture signal processorInfo
- Publication number
- JPS6418369A JPS6418369A JP62175171A JP17517187A JPS6418369A JP S6418369 A JPS6418369 A JP S6418369A JP 62175171 A JP62175171 A JP 62175171A JP 17517187 A JP17517187 A JP 17517187A JP S6418369 A JPS6418369 A JP S6418369A
- Authority
- JP
- Japan
- Prior art keywords
- error
- picture element
- hxy
- correction
- random
- 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 control the production of a texture in the error diffusion method and to apply density correction by selecting the distribution ratio of a binarization error with respect to peripheral picture elements together with picture element processing from plural arrangement coefficient sets at random and utilizing it. CONSTITUTION:An error operating means 110 obtains a correction error Hxy from a binarization error Exy from a differential arithmetic means 109 and a coefficient K1 taking a threshold level TH from a threshold level input terminal 106 as a function. An arrangement coefficient generating means 112 prepares in advance two arrangement coefficient sets with respect to an unprocessed picture element around the objective picture element, selects distribution coefficients KA-KD of a correction error Hxy to picture element positions A-D in the surrounding picture element region 102 at random and gives an output to an error distributing/updating means 111. The means 111 stores the coefficients KA-KD and the correction error Hxy to the objective picture element from the means 110 to a storage device corresponding to picture element positions A, C, D in the peripheral picture element area 102 of an error storage means 101 to obtain a new integrated circuit error, thereby applying the updating of the storage value in the means 101.
Priority Applications (10)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62175171A JPS6418369A (en) | 1987-07-14 | 1987-07-14 | Picture signal processor |
DE3751916T DE3751916D1 (en) | 1986-12-19 | 1987-12-18 | Device for processing signals for displaying images with two levels |
DE3785558T DE3785558T3 (en) | 1986-12-19 | 1987-12-18 | Device for processing signals for displaying images with two levels. |
EP92110386A EP0507356B1 (en) | 1986-12-19 | 1987-12-18 | Bi-level image display signal processing apparatus |
EP87311205A EP0272147B2 (en) | 1986-12-19 | 1987-12-18 | Bi-level image display signal processing apparatus |
DE3752022T DE3752022T2 (en) | 1986-12-19 | 1987-12-18 | Device for processing signals for displaying images with two levels |
EP92110032A EP0507354B1 (en) | 1986-12-19 | 1987-12-18 | Bi-level image display signal processing apparatus |
EP92110355A EP0512578B1 (en) | 1986-12-19 | 1987-12-18 | Bi-level image display signal processing apparatus |
DE3751957T DE3751957T2 (en) | 1986-12-19 | 1987-12-18 | Device for processing signals for displaying images with two levels |
US07/136,486 US4891710A (en) | 1986-12-19 | 1987-12-21 | Bi-level image display signal processing apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62175171A JPS6418369A (en) | 1987-07-14 | 1987-07-14 | Picture signal processor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6418369A true JPS6418369A (en) | 1989-01-23 |
Family
ID=15991506
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62175171A Pending JPS6418369A (en) | 1986-12-19 | 1987-07-14 | Picture signal processor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6418369A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03107739A (en) * | 1989-09-20 | 1991-05-08 | Olympus Optical Co Ltd | Instrument and method for measuring eccentricity of lens system |
JPH0465974A (en) * | 1990-07-02 | 1992-03-02 | Sharp Corp | Image processor |
EP0501023A2 (en) * | 1991-02-25 | 1992-09-02 | International Business Machines Corporation | Coupled-color error diffusion |
JPH05219379A (en) * | 1991-09-05 | 1993-08-27 | Xerox Corp | Method and device for quantizing picture element value |
-
1987
- 1987-07-14 JP JP62175171A patent/JPS6418369A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03107739A (en) * | 1989-09-20 | 1991-05-08 | Olympus Optical Co Ltd | Instrument and method for measuring eccentricity of lens system |
JPH0465974A (en) * | 1990-07-02 | 1992-03-02 | Sharp Corp | Image processor |
EP0501023A2 (en) * | 1991-02-25 | 1992-09-02 | International Business Machines Corporation | Coupled-color error diffusion |
JPH05219379A (en) * | 1991-09-05 | 1993-08-27 | Xerox Corp | Method and device for quantizing picture element value |
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