JPS54150021A - Process system for picture element signal - Google Patents
Process system for picture element signalInfo
- Publication number
- JPS54150021A JPS54150021A JP5826478A JP5826478A JPS54150021A JP S54150021 A JPS54150021 A JP S54150021A JP 5826478 A JP5826478 A JP 5826478A JP 5826478 A JP5826478 A JP 5826478A JP S54150021 A JPS54150021 A JP S54150021A
- Authority
- JP
- Japan
- Prior art keywords
- level
- picture
- column
- chart
- code
- 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)
- Facsimiles In General (AREA)
- Facsimile Image Signal Circuits (AREA)
Abstract
PURPOSE: To secure the process of the picture signals with a high data compression rate and thus to ensure a highly efficient transmission of the signals by applying the run-length encoding method to the black and white part of the picture and then encoding the level directly the level for the picture of intermediate gradation.
CONSTITUTION: Picture image (a) is sampled along scan line AB to secure quadrivalent quantization 60, and thus density histogram (b). As a result, the density level shown in column 2 is obtained in accordance with the picture elements eack shown in column 1 of Chart 50. The picture elements of the level (code 00) showing the white color and the picture elements of the level (code 11) showing the black color are those of G∼J, L, M, O and Q∼T, and this section means the run- length encoding section (column 3 of Chart 50). The picture elements of the level (code 01, 10) showing the intermediate gradation are K, N and P, and this section is that (column 4 of Chart 50) where the density is encoded directly. Accordingly, the information of each element is compressed to the code shown in column 5 of Chart 50 to be transmitted. In this way, the transmission efficiency can be increased.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5826478A JPS54150021A (en) | 1978-05-18 | 1978-05-18 | Process system for picture element signal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5826478A JPS54150021A (en) | 1978-05-18 | 1978-05-18 | Process system for picture element signal |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54150021A true JPS54150021A (en) | 1979-11-24 |
Family
ID=13079296
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5826478A Pending JPS54150021A (en) | 1978-05-18 | 1978-05-18 | Process system for picture element signal |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54150021A (en) |
-
1978
- 1978-05-18 JP JP5826478A patent/JPS54150021A/en active Pending
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