JPS6429168A - Video signal processor - Google Patents
Video signal processorInfo
- Publication number
- JPS6429168A JPS6429168A JP62186157A JP18615787A JPS6429168A JP S6429168 A JPS6429168 A JP S6429168A JP 62186157 A JP62186157 A JP 62186157A JP 18615787 A JP18615787 A JP 18615787A JP S6429168 A JPS6429168 A JP S6429168A
- Authority
- JP
- Japan
- Prior art keywords
- value
- picture
- picture element
- respect
- value 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
Landscapes
- Facsimile Image Signal Circuits (AREA)
Abstract
PURPOSE:To remarkably suppress a false picture (texture) by not limiting the rate of arrangement of a multi-value processing error of a noted picture element with respect to peripheral picture elements to a constant value and revising and utilizing sequentially plural distribution rates in a distribution coefficient set together with the picture element processing. CONSTITUTION:A multi-value processing output selection means 107 is provided and a high-order n-bit of an input correction level is used as a multi-value processing output data, a multi-value level corresponding to a multi-value output data is selected and outputted. Thus, the picture of the multi-value level is reproduced easily. Moreover, the arrangement ratio of multi-value processing error of the noted picture element with respect to surrounding picture elements is revised by means of an arrangement coefficient generating means 110 together with the processing of the picture element. Thus, a function that the distribution quantity of the multi-value processing error is not biased to the surrounding picture elements in a prescribed relative position with respect to the noted picture element is realized so as to prevent production of a texture pattern on the processed output picture.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62186157A JPH06103922B2 (en) | 1987-07-24 | 1987-07-24 | Image signal processor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62186157A JPH06103922B2 (en) | 1987-07-24 | 1987-07-24 | Image signal processor |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6429168A true JPS6429168A (en) | 1989-01-31 |
JPH06103922B2 JPH06103922B2 (en) | 1994-12-14 |
Family
ID=16183378
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62186157A Expired - Lifetime JPH06103922B2 (en) | 1987-07-24 | 1987-07-24 | Image signal processor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH06103922B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03147480A (en) * | 1989-11-02 | 1991-06-24 | Canon Inc | Picture processing unit |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57125579A (en) * | 1981-01-29 | 1982-08-04 | Ricoh Co Ltd | Processing method for intermediate tone picture |
JPS5896459A (en) * | 1981-12-04 | 1983-06-08 | Matsushita Electric Ind Co Ltd | Quantizing method for picture luminance signal |
JPS6074772A (en) * | 1983-09-29 | 1985-04-27 | Matsushita Electric Ind Co Ltd | Quantizing method of multi-value picture information |
JPS62139472A (en) * | 1985-12-12 | 1987-06-23 | Nec Corp | Pseudo halftone image processor |
-
1987
- 1987-07-24 JP JP62186157A patent/JPH06103922B2/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57125579A (en) * | 1981-01-29 | 1982-08-04 | Ricoh Co Ltd | Processing method for intermediate tone picture |
JPS5896459A (en) * | 1981-12-04 | 1983-06-08 | Matsushita Electric Ind Co Ltd | Quantizing method for picture luminance signal |
JPS6074772A (en) * | 1983-09-29 | 1985-04-27 | Matsushita Electric Ind Co Ltd | Quantizing method of multi-value picture information |
JPS62139472A (en) * | 1985-12-12 | 1987-06-23 | Nec Corp | Pseudo halftone image processor |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03147480A (en) * | 1989-11-02 | 1991-06-24 | Canon Inc | Picture processing unit |
Also Published As
Publication number | Publication date |
---|---|
JPH06103922B2 (en) | 1994-12-14 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EXPY | Cancellation because of completion of term | ||
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20071214 Year of fee payment: 13 |