JPS6482761A - Picture processor - Google Patents
Picture processorInfo
- Publication number
- JPS6482761A JPS6482761A JP62238825A JP23882587A JPS6482761A JP S6482761 A JPS6482761 A JP S6482761A JP 62238825 A JP62238825 A JP 62238825A JP 23882587 A JP23882587 A JP 23882587A JP S6482761 A JPS6482761 A JP S6482761A
- Authority
- JP
- Japan
- Prior art keywords
- image
- binary
- signal
- image part
- tone
- 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 Input (AREA)
- Facsimile Image Signal Circuits (AREA)
Abstract
PURPOSE:To obtain a sharp output image as well as a half-tone image part as to a binary image part by deciding whether an image signal is the half-tone image part or binary image part according to the differential output of an image signal and coding the signal into a binary signal with different threshold values respectively. CONSTITUTION:A 1st comparator 11 discriminates between the half-tone image part and binary image part of the image signal according to the output of a differentiating means 10. Then a dither matrix threshold value for the half- tone image part or a fixed threshold value for the binary image part is set to code the image signal into a binary signal, and then the binary image part is properly recognized as a black or white picture element. Consequently, the image processor is obtained which reproduces even the binary image with sharp recording quality as well as the half-tone image.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62238825A JPS6482761A (en) | 1987-09-25 | 1987-09-25 | Picture processor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62238825A JPS6482761A (en) | 1987-09-25 | 1987-09-25 | Picture processor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6482761A true JPS6482761A (en) | 1989-03-28 |
Family
ID=17035829
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62238825A Pending JPS6482761A (en) | 1987-09-25 | 1987-09-25 | Picture processor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6482761A (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6180968A (en) * | 1984-09-28 | 1986-04-24 | Fuji Xerox Co Ltd | Picture signal processor |
JPS61150468A (en) * | 1984-12-24 | 1986-07-09 | Toshiba Corp | Picture processing circuit |
-
1987
- 1987-09-25 JP JP62238825A patent/JPS6482761A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6180968A (en) * | 1984-09-28 | 1986-04-24 | Fuji Xerox Co Ltd | Picture signal processor |
JPS61150468A (en) * | 1984-12-24 | 1986-07-09 | Toshiba Corp | Picture processing circuit |
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