JPS6486758A - Correction device for shading - Google Patents

Correction device for shading

Info

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
Application number
JP62245340A
Other languages
Japanese (ja)
Other versions
JPH0681252B2 (en
Inventor
Yoshimi Takasaki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujifilm Holdings Corp
Original Assignee
Fuji Photo Film Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fuji Photo Film Co Ltd filed Critical Fuji Photo Film Co Ltd
Priority to JP62245340A priority Critical patent/JPH0681252B2/en
Publication of JPS6486758A publication Critical patent/JPS6486758A/en
Publication of JPH0681252B2 publication Critical patent/JPH0681252B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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.
JP62245340A 1987-09-29 1987-09-29 Shading correction device Expired - Lifetime JPH0681252B2 (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (2)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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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