JPS5580956A - Picture signal coding system - Google Patents
Picture signal coding systemInfo
- Publication number
- JPS5580956A JPS5580956A JP15551678A JP15551678A JPS5580956A JP S5580956 A JPS5580956 A JP S5580956A JP 15551678 A JP15551678 A JP 15551678A JP 15551678 A JP15551678 A JP 15551678A JP S5580956 A JPS5580956 A JP S5580956A
- Authority
- JP
- Japan
- Prior art keywords
- picture
- gradation level
- coding
- gradation
- pattern
- 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)
Abstract
PURPOSE: To secure the coding to ensure the reproduction of a high-quality picture by giving the gradation properties to the picture, the quality of which was so far deteriorated through coding in the form of the binary picture, with addition of a small number of bits.
CONSTITUTION: In case the shadow pattern is coded, the pattern is coded in the form of the binary picture of under gradation level 1 and over gradation level 2 each. With decision of the binary picture, the positions are decided in a single meaning way for both the inside and outside points of white/black border line 11. Thus, for instance, the coding is given in sequence from the upper left, for example, of the pattern to the gradation information about only those outside and inside points. At the same time, whether the gradation level at outside point 11 is 0 or 1 as well as the gradation level at inside point 13 is 2 or 3 are shown with one bit each.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15551678A JPS5580956A (en) | 1978-12-13 | 1978-12-13 | Picture signal coding system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15551678A JPS5580956A (en) | 1978-12-13 | 1978-12-13 | Picture signal coding system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5580956A true JPS5580956A (en) | 1980-06-18 |
Family
ID=15607755
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15551678A Pending JPS5580956A (en) | 1978-12-13 | 1978-12-13 | Picture signal coding system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5580956A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5857158U (en) * | 1981-10-13 | 1983-04-18 | 三洋電機株式会社 | facsimile signal recording device |
JPS6020277A (en) * | 1983-07-15 | 1985-02-01 | Fujitsu Ltd | Multiple tone wedge data compression system |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52117511A (en) * | 1976-03-30 | 1977-10-03 | Canon Inc | Picture recording method and its equipment |
-
1978
- 1978-12-13 JP JP15551678A patent/JPS5580956A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52117511A (en) * | 1976-03-30 | 1977-10-03 | Canon Inc | Picture recording method and its equipment |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5857158U (en) * | 1981-10-13 | 1983-04-18 | 三洋電機株式会社 | facsimile signal recording device |
JPH0224301Y2 (en) * | 1981-10-13 | 1990-07-03 | ||
JPS6020277A (en) * | 1983-07-15 | 1985-02-01 | Fujitsu Ltd | Multiple tone wedge data compression system |
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