JPS556688A - Binary level decision circuit - Google Patents
Binary level decision circuitInfo
- Publication number
- JPS556688A JPS556688A JP7962778A JP7962778A JPS556688A JP S556688 A JPS556688 A JP S556688A JP 7962778 A JP7962778 A JP 7962778A JP 7962778 A JP7962778 A JP 7962778A JP S556688 A JPS556688 A JP S556688A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- brightness
- level
- distribution
- analytic signal
- 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 Input (AREA)
Abstract
PURPOSE: To make it possible to determine an optimum threshold level with remarkably high accuracy by counting a sample group with specific relation according to lightness levels and using the brightness distribution of shape features for the determination of the optimum threshold level.
CONSTITUTION: Feature extraction circuit 6 is given a level pattern obtained from one shape feature of the observation object of TV camera 1 by expressing by electric levels. By sampling the output of comparator circuit 2, circuit 6 extracts and sends the n -number samples to counter circuit 7 when the n -number samples or more of level 1 continues. The discrete values of counter circuits 3 and 7 are inputted to analyzer circuit 8. Circuit 8 supplies brightness analytic signal (b0) to D/A converter circuit 4. Further, circuit 8 calculates the distribution to the brightness analytic signal (b) of the difference of the discrete value of circuit 3 and the distribution to the brightness analytic signal level of the difference of the discrete value of circuit 7. Then, analyzer circuit 8 regards a brightness level, equivalent to the specific point of the discrete value of circuit 7, as the best threshold level and sends it out.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7962778A JPS556688A (en) | 1978-06-29 | 1978-06-29 | Binary level decision circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7962778A JPS556688A (en) | 1978-06-29 | 1978-06-29 | Binary level decision circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS556688A true JPS556688A (en) | 1980-01-18 |
Family
ID=13695306
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7962778A Pending JPS556688A (en) | 1978-06-29 | 1978-06-29 | Binary level decision circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS556688A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5999584A (en) * | 1982-11-30 | 1984-06-08 | Toshiba Corp | Determining device of optimum binary reference voltage |
JPS59184803A (en) * | 1983-04-06 | 1984-10-20 | Mitsubishi Chem Ind Ltd | Processing system of high-speed image processor |
-
1978
- 1978-06-29 JP JP7962778A patent/JPS556688A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5999584A (en) * | 1982-11-30 | 1984-06-08 | Toshiba Corp | Determining device of optimum binary reference voltage |
JPS59184803A (en) * | 1983-04-06 | 1984-10-20 | Mitsubishi Chem Ind Ltd | Processing system of high-speed image processor |
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