JPH0354509B2 - - Google Patents
Info
- Publication number
- JPH0354509B2 JPH0354509B2 JP57003258A JP325882A JPH0354509B2 JP H0354509 B2 JPH0354509 B2 JP H0354509B2 JP 57003258 A JP57003258 A JP 57003258A JP 325882 A JP325882 A JP 325882A JP H0354509 B2 JPH0354509 B2 JP H0354509B2
- Authority
- JP
- Japan
- Prior art keywords
- shading correction
- correction coefficient
- photoelectric conversion
- reading
- 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.)
- Expired - Lifetime
Links
- 238000003705 background correction Methods 0.000 claims description 41
- 238000006243 chemical reaction Methods 0.000 claims description 30
- 238000003860 storage Methods 0.000 claims description 16
- 238000000034 method Methods 0.000 description 8
- 238000009826 distribution Methods 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 5
- 230000035945 sensitivity Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000001454 recorded image Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000004044 response Effects 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
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Image Input (AREA)
- Facsimile Image Signal Circuits (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57003258A JPS58121864A (ja) | 1982-01-14 | 1982-01-14 | シエ−デイング補正装置 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57003258A JPS58121864A (ja) | 1982-01-14 | 1982-01-14 | シエ−デイング補正装置 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58121864A JPS58121864A (ja) | 1983-07-20 |
| JPH0354509B2 true JPH0354509B2 (fr) | 1991-08-20 |
Family
ID=11552440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57003258A Granted JPS58121864A (ja) | 1982-01-14 | 1982-01-14 | シエ−デイング補正装置 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58121864A (fr) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6077575A (ja) * | 1983-10-05 | 1985-05-02 | Konishiroku Photo Ind Co Ltd | シエ−デイング補正装置 |
| JPS6077574A (ja) * | 1983-10-05 | 1985-05-02 | Konishiroku Photo Ind Co Ltd | 原稿読取装置 |
| JPS6096955A (ja) * | 1983-10-31 | 1985-05-30 | Konishiroku Photo Ind Co Ltd | シエ−デイング補正装置 |
| JPS62257280A (ja) * | 1986-04-30 | 1987-11-09 | Pfu Ltd | 白レベルホロワ回路 |
| JP2594963B2 (ja) * | 1987-08-26 | 1997-03-26 | 株式会社日立製作所 | シェーディング補正方式 |
| JPH0681252B2 (ja) * | 1987-09-29 | 1994-10-12 | 富士写真フイルム株式会社 | シェーディングの補正装置 |
| JP3281489B2 (ja) * | 1994-08-19 | 2002-05-13 | キヤノン株式会社 | 画像読み取り処理装置 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5198932A (en) * | 1975-02-26 | 1976-08-31 | Deijitarukairono seigyohoshiki | |
| JPS5266346A (en) * | 1975-11-29 | 1977-06-01 | Tokyo Electric Co Ltd | Synch. clock control of microcomputer system |
| JPS5275234A (en) * | 1975-12-19 | 1977-06-24 | Toshiba Corp | Pattern pick up unit |
| JPS575467A (en) * | 1980-06-12 | 1982-01-12 | Matsushita Electric Ind Co Ltd | Output correcting device for plurality of element sensors |
-
1982
- 1982-01-14 JP JP57003258A patent/JPS58121864A/ja active Granted
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5198932A (en) * | 1975-02-26 | 1976-08-31 | Deijitarukairono seigyohoshiki | |
| JPS5266346A (en) * | 1975-11-29 | 1977-06-01 | Tokyo Electric Co Ltd | Synch. clock control of microcomputer system |
| JPS5275234A (en) * | 1975-12-19 | 1977-06-24 | Toshiba Corp | Pattern pick up unit |
| JPS575467A (en) * | 1980-06-12 | 1982-01-12 | Matsushita Electric Ind Co Ltd | Output correcting device for plurality of element sensors |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58121864A (ja) | 1983-07-20 |
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