JPH0249589B2 - - Google Patents
Info
- Publication number
- JPH0249589B2 JPH0249589B2 JP56124791A JP12479181A JPH0249589B2 JP H0249589 B2 JPH0249589 B2 JP H0249589B2 JP 56124791 A JP56124791 A JP 56124791A JP 12479181 A JP12479181 A JP 12479181A JP H0249589 B2 JPH0249589 B2 JP H0249589B2
- Authority
- JP
- Japan
- Prior art keywords
- shading correction
- correction coefficient
- circuit
- shading
- interpolation
- 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.)
- Expired - Lifetime
Links
- 238000003705 background correction Methods 0.000 claims description 60
- 238000006243 chemical reaction Methods 0.000 claims description 35
- 238000000034 method Methods 0.000 claims description 20
- 238000005070 sampling Methods 0.000 claims description 19
- 238000003860 storage Methods 0.000 claims description 18
- 238000010586 diagram Methods 0.000 description 7
- 239000011159 matrix material Substances 0.000 description 7
- 238000009826 distribution Methods 0.000 description 6
- 230000035945 sensitivity Effects 0.000 description 6
- 230000003287 optical effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000001454 recorded image Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
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
- H04N1/401—Compensating positionally unequal response of the pick-up or reproducing head
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Exposure Or Original Feeding In Electrophotography (AREA)
- Image Input (AREA)
- Facsimile Image Signal Circuits (AREA)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12479181A JPS5827466A (ja) | 1981-08-11 | 1981-08-11 | シエ−デイング補正装置 |
US06/406,078 US4524388A (en) | 1981-08-11 | 1982-08-06 | Shading correction device |
DE19823229586 DE3229586C3 (de) | 1981-08-11 | 1982-08-09 | Abschattungs-ausgleichvorrichtung |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12479181A JPS5827466A (ja) | 1981-08-11 | 1981-08-11 | シエ−デイング補正装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5827466A JPS5827466A (ja) | 1983-02-18 |
JPH0249589B2 true JPH0249589B2 (sv) | 1990-10-30 |
Family
ID=14894205
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12479181A Granted JPS5827466A (ja) | 1981-08-11 | 1981-08-11 | シエ−デイング補正装置 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5827466A (sv) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6023820A (ja) * | 1983-07-19 | 1985-02-06 | Fuji Photo Film Co Ltd | 放射線画像情報読取誤差補正方法 |
US4691241A (en) * | 1983-12-06 | 1987-09-01 | Dainippon Screen Mfg. Co., Ltd. | Method and system for compensating for a shading phenomenon |
JPS6153868A (ja) * | 1984-08-24 | 1986-03-17 | Dainippon Screen Mfg Co Ltd | 画像走査信号処理におけるキャリブレーション装置 |
JP2804568B2 (ja) * | 1989-12-25 | 1998-09-30 | 株式会社リコー | 画像読取装置 |
JPH0316365A (ja) * | 1990-06-01 | 1991-01-24 | Canon Inc | 画像読取装置 |
JP3180589B2 (ja) * | 1994-10-31 | 2001-06-25 | 松下電器産業株式会社 | 光ビーム加熱装置 |
JP6303408B2 (ja) * | 2013-11-06 | 2018-04-04 | 株式会社リコー | 画像読取装置、画像読取方法および画像形成装置 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5028937A (sv) * | 1973-07-16 | 1975-03-24 | ||
JPS50159216A (sv) * | 1974-06-12 | 1975-12-23 | ||
JPS53123201A (en) * | 1977-04-01 | 1978-10-27 | Dainippon Screen Mfg | Method for compensating distance between signals for memory device |
-
1981
- 1981-08-11 JP JP12479181A patent/JPS5827466A/ja active Granted
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5028937A (sv) * | 1973-07-16 | 1975-03-24 | ||
JPS50159216A (sv) * | 1974-06-12 | 1975-12-23 | ||
JPS53123201A (en) * | 1977-04-01 | 1978-10-27 | Dainippon Screen Mfg | Method for compensating distance between signals for memory device |
Also Published As
Publication number | Publication date |
---|---|
JPS5827466A (ja) | 1983-02-18 |
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