JPS5571353A - Picture noise eliminating method - Google Patents

Picture noise eliminating method

Info

Publication number
JPS5571353A
JPS5571353A JP14516578A JP14516578A JPS5571353A JP S5571353 A JPS5571353 A JP S5571353A JP 14516578 A JP14516578 A JP 14516578A JP 14516578 A JP14516578 A JP 14516578A JP S5571353 A JPS5571353 A JP S5571353A
Authority
JP
Japan
Prior art keywords
picture
density
divided
picture elements
elements
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
Application number
JP14516578A
Other languages
Japanese (ja)
Inventor
Morizumi Kurose
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP14516578A priority Critical patent/JPS5571353A/en
Publication of JPS5571353A publication Critical patent/JPS5571353A/en
Pending legal-status Critical Current

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  • Facsimile Image Signal Circuits (AREA)

Abstract

PURPOSE: To eliminate picture noise without damaging a picture by processing density signals on a basis of a specific arithmetic expression when the picture is reproduced on a basis of density signals corresponding to respective picture elements which are subjected to photoelectric conversion.
CONSTITUTION: An original picture is divided into many picture elements, and these divided picture elements are converted photoelectrically. In picture reproducing based on density signals corresponding to respective picture elements converted photoelectrically, an operation processing is performed according to y= x(x/MAXx)R for real number R when the input density of a certain object noticed picture element out of divided picture elements, and the output density of it, and the maximum density from the first picture element to picture element x in the picture are denoted as x, y and MAXx respectively. By this operation processing, the change characteristic of the density level is smoothed even in case of a low density level, and noise is eliminated, and the half-tone is smoothed.
COPYRIGHT: (C)1980,JPO&Japio
JP14516578A 1978-11-24 1978-11-24 Picture noise eliminating method Pending JPS5571353A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14516578A JPS5571353A (en) 1978-11-24 1978-11-24 Picture noise eliminating method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14516578A JPS5571353A (en) 1978-11-24 1978-11-24 Picture noise eliminating method

Publications (1)

Publication Number Publication Date
JPS5571353A true JPS5571353A (en) 1980-05-29

Family

ID=15378923

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14516578A Pending JPS5571353A (en) 1978-11-24 1978-11-24 Picture noise eliminating method

Country Status (1)

Country Link
JP (1) JPS5571353A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62266966A (en) * 1986-04-30 1987-11-19 ライノタイプ―ヘル　アクチエンゲゼルシャフト Method and apparatus for recording original
JPH0889613A (en) * 1994-09-28 1996-04-09 Takashi Kinoshita Putting trainer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62266966A (en) * 1986-04-30 1987-11-19 ライノタイプ―ヘル　アクチエンゲゼルシャフト Method and apparatus for recording original
JPH0889613A (en) * 1994-09-28 1996-04-09 Takashi Kinoshita Putting trainer

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