JPS5778277A - Video coding method - Google Patents
Video coding methodInfo
- Publication number
- JPS5778277A JPS5778277A JP55153537A JP15353780A JPS5778277A JP S5778277 A JPS5778277 A JP S5778277A JP 55153537 A JP55153537 A JP 55153537A JP 15353780 A JP15353780 A JP 15353780A JP S5778277 A JPS5778277 A JP S5778277A
- Authority
- JP
- Japan
- Prior art keywords
- coding
- intermediate tone
- region
- video data
- coded
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/41—Bandwidth or redundancy reduction
Abstract
PURPOSE:To make efficient the coding, by coding two coordinates of intermediate tone region in advance, in a method coding video data of multi-value obtained through sampling. CONSTITUTION:The entire area of picture is divided into an intermediate tone region A and a non-intermediate tone region B by calculating the statistical amount of density information of video data. As to the intermediate tone region A, two coordinates G(I1J1),G(I2J2) designating a rectangular region of this intermediate tone are coded and transmitted ahead the coding of picture. As to this region, the video data is coded by using the primary dimension level plane coding method as a multi- value data. On the other hand, as to the non-intermediate tone region B, the video data is coded by using the modified read coding method as the binary data. Thus, as a whole the transmission efficiency can be increased.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55153537A JPS5778277A (en) | 1980-10-31 | 1980-10-31 | Video coding method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55153537A JPS5778277A (en) | 1980-10-31 | 1980-10-31 | Video coding method |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5778277A true JPS5778277A (en) | 1982-05-15 |
Family
ID=15564677
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP55153537A Pending JPS5778277A (en) | 1980-10-31 | 1980-10-31 | Video coding method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5778277A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6191772A (en) * | 1984-10-11 | 1986-05-09 | Canon Inc | Picture processor |
JPH01144778A (en) * | 1987-11-30 | 1989-06-07 | Canon Inc | Image encoding method |
JPH03254573A (en) * | 1990-03-05 | 1991-11-13 | Canon Inc | Encoding device for color picture |
JPH09154023A (en) * | 1996-11-18 | 1997-06-10 | Canon Inc | Device and method for processing picture |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5561171A (en) * | 1978-10-31 | 1980-05-08 | Nippon Telegr & Teleph Corp <Ntt> | Tone code system for facsimile signal |
JPS5566174A (en) * | 1978-11-13 | 1980-05-19 | Ricoh Co Ltd | Reproducer of gradation picture |
-
1980
- 1980-10-31 JP JP55153537A patent/JPS5778277A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5561171A (en) * | 1978-10-31 | 1980-05-08 | Nippon Telegr & Teleph Corp <Ntt> | Tone code system for facsimile signal |
JPS5566174A (en) * | 1978-11-13 | 1980-05-19 | Ricoh Co Ltd | Reproducer of gradation picture |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6191772A (en) * | 1984-10-11 | 1986-05-09 | Canon Inc | Picture processor |
JPH01144778A (en) * | 1987-11-30 | 1989-06-07 | Canon Inc | Image encoding method |
JPH03254573A (en) * | 1990-03-05 | 1991-11-13 | Canon Inc | Encoding device for color picture |
JPH09154023A (en) * | 1996-11-18 | 1997-06-10 | Canon Inc | Device and method for processing picture |
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