JPS5613871A - Automatic shading correction system - Google Patents
Automatic shading correction systemInfo
- Publication number
- JPS5613871A JPS5613871A JP8943079A JP8943079A JPS5613871A JP S5613871 A JPS5613871 A JP S5613871A JP 8943079 A JP8943079 A JP 8943079A JP 8943079 A JP8943079 A JP 8943079A JP S5613871 A JPS5613871 A JP S5613871A
- Authority
- JP
- Japan
- Prior art keywords
- response speed
- abc
- circuit
- variance
- shading
- 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
- H04N1/40—Picture signal circuits
- H04N1/407—Control or modification of tonal gradation or of extreme levels, e.g. background level
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Facsimile Image Signal Circuits (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8943079A JPS5613871A (en) | 1979-07-14 | 1979-07-14 | Automatic shading correction system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8943079A JPS5613871A (en) | 1979-07-14 | 1979-07-14 | Automatic shading correction system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5613871A true JPS5613871A (en) | 1981-02-10 |
Family
ID=13970436
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8943079A Pending JPS5613871A (en) | 1979-07-14 | 1979-07-14 | Automatic shading correction system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5613871A (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0158962A2 (en) * | 1984-04-11 | 1985-10-23 | Sharp Kabushiki Kaisha | CCD sensor output circuit of image reading apparatus |
-
1979
- 1979-07-14 JP JP8943079A patent/JPS5613871A/ja active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0158962A2 (en) * | 1984-04-11 | 1985-10-23 | Sharp Kabushiki Kaisha | CCD sensor output circuit of image reading apparatus |
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