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JPS5522720A - Noise processing system of digital image data - Google Patents

Noise processing system of digital image data

Info

Publication number
JPS5522720A
JPS5522720A JP9492978A JP9492978A JPS5522720A JP S5522720 A JPS5522720 A JP S5522720A JP 9492978 A JP9492978 A JP 9492978A JP 9492978 A JP9492978 A JP 9492978A JP S5522720 A JPS5522720 A JP S5522720A
Authority
JP
Japan
Prior art keywords
noise
picture elements
value
image data
thru
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
JP9492978A
Other languages
Japanese (ja)
Inventor
Morizumi Kurose
Koichi Ejiri
Mamoru Maeda
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 JP9492978A priority Critical patent/JPS5522720A/en
Publication of JPS5522720A publication Critical patent/JPS5522720A/en
Pending legal-status Critical Current

Links

Landscapes

  • Exposure Or Original Feeding In Electrophotography (AREA)

Abstract

PURPOSE: To achieve the removal of noise of image data by judging the satisfaction of the specified conditions by the densities of picture elements as noise thereby performing density correction.
CONSTITUTION: The digitized data Din from the scanner are written for each of picture elements in an input buffer 1. These picture elements are upper lower, right and left picture element densities W thru D and picture elements A thru D in the diagonal direction with a certain picture element P as a center. Next, the data having been written are read out and in an arithmetic part 3, the addition of A+ B+C+D and X+Y+Z is accomplished and the results of the addition are compared. On the other hand, whether the value of the P point is above the specified threshold value or not is judged by a level judging part 4 and if the value of the P point is above the threshold value and X+Y+Z+W>A+B+C+D, it is judged to be noise and a zero level (white color) is outputted. In other cases, the value of P is outputted directly. In this way, the images of good quality removed of noise may be obtained.
COPYRIGHT: (C)1980,JPO&Japio
JP9492978A 1978-08-03 1978-08-03 Noise processing system of digital image data Pending JPS5522720A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9492978A JPS5522720A (en) 1978-08-03 1978-08-03 Noise processing system of digital image data

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9492978A JPS5522720A (en) 1978-08-03 1978-08-03 Noise processing system of digital image data

Publications (1)

Publication Number Publication Date
JPS5522720A true JPS5522720A (en) 1980-02-18

Family

ID=14123648

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9492978A Pending JPS5522720A (en) 1978-08-03 1978-08-03 Noise processing system of digital image data

Country Status (1)

Country Link
JP (1) JPS5522720A (en)

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