JPS566523A - Video binary coding system - Google Patents
Video binary coding systemInfo
- Publication number
- JPS566523A JPS566523A JP8135479A JP8135479A JPS566523A JP S566523 A JPS566523 A JP S566523A JP 8135479 A JP8135479 A JP 8135479A JP 8135479 A JP8135479 A JP 8135479A JP S566523 A JPS566523 A JP S566523A
- Authority
- JP
- Japan
- Prior art keywords
- threshold level
- picture
- dispersion
- memory
- level
- 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
- H04N5/00—Details of television systems
- H04N5/14—Picture signal circuitry for video frequency region
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Facsimile Image Signal Circuits (AREA)
- Manipulation Of Pulses (AREA)
- Picture Signal Circuits (AREA)
Abstract
PURPOSE:To obtain the threshold level based on the maximum and minimum levels selected properly by the luminance level and then ensure the steady threshold level process for the video signal based on the threshold level obtained above. CONSTITUTION:The pickup signal obtained through pickup device 5 receives the A/D conversion and then stored in shift to two-dimensional picture reproducing circuit 7 consisting of the shift register groups in order to reproduce the two-dimensional picture. Local memory 8 stores the picture element which corresponding to the local area of the two-dimensional picture. Dispersion deciding circuit 9 detects whether the size of the picture element stored in memory 8 has the dispersion under a certain level. And gate 10 is turned on in case the dispersion is under a certain level, and then the picture elements within memory 8 are supplied to maximum and minimum detecting circuits 11 and 12 each. Thus optimum threshold level 15 is obtained through threshold level deciding circuit 13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8135479A JPS566523A (en) | 1979-06-29 | 1979-06-29 | Video binary coding system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8135479A JPS566523A (en) | 1979-06-29 | 1979-06-29 | Video binary coding system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS566523A true JPS566523A (en) | 1981-01-23 |
Family
ID=13744014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8135479A Pending JPS566523A (en) | 1979-06-29 | 1979-06-29 | Video binary coding system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS566523A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5810966A (en) * | 1981-07-09 | 1983-01-21 | ゼロツクス・コ−ポレ−シヨン | Method of determining optimum threshold value for processing threshold of image element and adaptive threshold processor |
| JPS5957572A (en) * | 1982-09-27 | 1984-04-03 | Hitachi Ltd | Binary-coding system |
| US4446486A (en) * | 1981-03-13 | 1984-05-01 | Fuji Xerox Co., Ltd. | Image signal processing circuit |
| CN102752609A (en) * | 2011-12-15 | 2012-10-24 | 新奥特（北京）视频技术有限公司 | Color matching method for adjusting multi-material broadcasting security level rapidly |
-
1979
- 1979-06-29 JP JP8135479A patent/JPS566523A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4446486A (en) * | 1981-03-13 | 1984-05-01 | Fuji Xerox Co., Ltd. | Image signal processing circuit |
| JPS5810966A (en) * | 1981-07-09 | 1983-01-21 | ゼロツクス・コ−ポレ−シヨン | Method of determining optimum threshold value for processing threshold of image element and adaptive threshold processor |
| JPS5957572A (en) * | 1982-09-27 | 1984-04-03 | Hitachi Ltd | Binary-coding system |
| JPH0436503B2 (en) * | 1982-09-27 | 1992-06-16 | Hitachi Ltd | |
| CN102752609A (en) * | 2011-12-15 | 2012-10-24 | 新奥特（北京）视频技术有限公司 | Color matching method for adjusting multi-material broadcasting security level rapidly |
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