JPS6486758A - Correction device for shading - Google Patents
Correction device for shadingInfo
- Publication number
- JPS6486758A JPS6486758A JP62245340A JP24534087A JPS6486758A JP S6486758 A JPS6486758 A JP S6486758A JP 62245340 A JP62245340 A JP 62245340A JP 24534087 A JP24534087 A JP 24534087A JP S6486758 A JPS6486758 A JP S6486758A
- Authority
- JP
- Japan
- Prior art keywords
- shading
- data
- shading correction
- read
- high voltage
- 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.)
- Granted
Links
Landscapes
- Facsimile Scanning Arrangements (AREA)
- Facsimile Image Signal Circuits (AREA)
Abstract
PURPOSE:To perform shading correction only one kind of shading correction data by providing an arithmetic means which performs the arithmetic processing of a picture signal based on the shading data read out from a storage means by a correction data readout clock. CONSTITUTION:An image is read by setting an accumulative phosphor sheet S on which picture information is recorded at an image scan reader and impressing a prescribed high voltage on a photomultiplier 28. In such a case, the high voltage is set based on designated reading sensitivity, therefore, for example, the shading correction data DI1 out of the shading correcting data DI1-DI3 with respect to the prescribed high voltage stored in a look-up table 10 is selected, and the data is read out at every read clock SR. And the shading correction data DI1 read out at every read clock SR and the output signal of the photomultiplier 28 are added by an adder 34, then, the shading correction is performed.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62245340A JPH0681252B2 (en) | 1987-09-29 | 1987-09-29 | Shading correction device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62245340A JPH0681252B2 (en) | 1987-09-29 | 1987-09-29 | Shading correction device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6486758A true JPS6486758A (en) | 1989-03-31 |
JPH0681252B2 JPH0681252B2 (en) | 1994-10-12 |
Family
ID=17132212
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62245340A Expired - Lifetime JPH0681252B2 (en) | 1987-09-29 | 1987-09-29 | Shading correction device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0681252B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004016175A1 (en) * | 2002-08-14 | 2004-02-26 | Konica Minolta Holdings, Inc. | Image input device |
JP2010220133A (en) * | 2009-03-18 | 2010-09-30 | Ricoh Co Ltd | Image reading device and image forming device |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58121864A (en) * | 1982-01-14 | 1983-07-20 | Konishiroku Photo Ind Co Ltd | Shading correction circuit |
JPS61128673A (en) * | 1984-11-27 | 1986-06-16 | Fuji Photo Film Co Ltd | Method and device for reading information of radiation image |
-
1987
- 1987-09-29 JP JP62245340A patent/JPH0681252B2/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58121864A (en) * | 1982-01-14 | 1983-07-20 | Konishiroku Photo Ind Co Ltd | Shading correction circuit |
JPS61128673A (en) * | 1984-11-27 | 1986-06-16 | Fuji Photo Film Co Ltd | Method and device for reading information of radiation image |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004016175A1 (en) * | 2002-08-14 | 2004-02-26 | Konica Minolta Holdings, Inc. | Image input device |
US7180042B2 (en) | 2002-08-14 | 2007-02-20 | Konica Minolta Holdings, Inc. | Radiographic image input apparatus which obtains image correction values based on a size or version of a radiographic recording member |
JP2010220133A (en) * | 2009-03-18 | 2010-09-30 | Ricoh Co Ltd | Image reading device and image forming device |
Also Published As
Publication number | Publication date |
---|---|
JPH0681252B2 (en) | 1994-10-12 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
EXPY | Cancellation because of completion of term |