JPS6441572A - Coding system - Google Patents
Coding systemInfo
- Publication number
- JPS6441572A JPS6441572A JP62198432A JP19843287A JPS6441572A JP S6441572 A JPS6441572 A JP S6441572A JP 62198432 A JP62198432 A JP 62198432A JP 19843287 A JP19843287 A JP 19843287A JP S6441572 A JPS6441572 A JP S6441572A
- Authority
- JP
- Japan
- Prior art keywords
- density value
- density
- picture element
- bit
- difference
- 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
Abstract
PURPOSE:To compress image information by comparing a picture element shown by an (n) bit with the density value of the picture element before it, allocating, when a density difference is shown by an (m) bit smaller than the (n), the density deference shown by the (m) bit and allocating the density value of the (n) bit in other cases. CONSTITUTION:An image fetched by a CCD camera 1 has the density value of 16 gradations in which one picture element is shown by the PCM code of 4 bits as a half tone, and the image is composed of the 90X90 elements. For a first (a head) picture element of one line, the density value is made into zero, and the difference from the density value of a second picture element is obtained. When the density difference is within + or -3, a prescribed compressing code corresponding to the density difference is added. When the density value is above + or -3, a prescribed identifying code, which indicates that the 4 bits are the PCM code, and the PCM code of such a density value are allocated. In such a way, the data of the portion of one screen are compression-coded and sent.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62198432A JPS6441572A (en) | 1987-08-07 | 1987-08-07 | Coding system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62198432A JPS6441572A (en) | 1987-08-07 | 1987-08-07 | Coding system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6441572A true JPS6441572A (en) | 1989-02-13 |
Family
ID=16390988
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62198432A Pending JPS6441572A (en) | 1987-08-07 | 1987-08-07 | Coding system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6441572A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007507182A (en) * | 2003-09-25 | 2007-03-22 | ピアレス・システムズ・コーポレーション | Divided run-length encoding method and apparatus |
-
1987
- 1987-08-07 JP JP62198432A patent/JPS6441572A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007507182A (en) * | 2003-09-25 | 2007-03-22 | ピアレス・システムズ・コーポレーション | Divided run-length encoding method and apparatus |
KR101180098B1 (en) * | 2003-09-25 | 2012-09-05 | 피어리스 시스템즈 코퍼레이션 | Split runlength encoding method and apparatus |
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