JPS55133179A - Picture processing system - Google Patents

Picture processing system

Info

Publication number
JPS55133179A
JPS55133179A JP4019779A JP4019779A JPS55133179A JP S55133179 A JPS55133179 A JP S55133179A JP 4019779 A JP4019779 A JP 4019779A JP 4019779 A JP4019779 A JP 4019779A JP S55133179 A JPS55133179 A JP S55133179A
Authority
JP
Japan
Prior art keywords
picture
azimuth
video element
taking
density gradient
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
JP4019779A
Other languages
Japanese (ja)
Inventor
Koichi Ejiri
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 JP4019779A priority Critical patent/JPS55133179A/en
Publication of JPS55133179A publication Critical patent/JPS55133179A/en
Pending legal-status Critical Current

Links

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

Abstract

PURPOSE:To effectively reject the particle noise without losing freshness of picture, by sampling based on the density gradient and azimuth at the circumference of video element. CONSTITUTION:The azimuth of the maximum density gradient in the picture is divided into 8 directions by taking a video element as the center and the operation obtaining the gradient of density is made between each matrix components. After the azimuth of the maximum density gradient is determined to the video element, the digital filters a to d taking the azimuth as 1 and other matrix as 0 are selected to perform average processing to the original picture. From the law of experience, the probability is higher for the important information to the maximum density gradient and the effect of noise rejection in a sentence is greater. Further, by taking into consideration the density around the noticed video element, relative sampling is made and the picture having greater freshness can be obtained with the processing in response to the change in the line picture.
JP4019779A 1979-04-03 1979-04-03 Picture processing system Pending JPS55133179A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4019779A JPS55133179A (en) 1979-04-03 1979-04-03 Picture processing system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4019779A JPS55133179A (en) 1979-04-03 1979-04-03 Picture processing system

Publications (1)

Publication Number Publication Date
JPS55133179A true JPS55133179A (en) 1980-10-16

Family

ID=12574048

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4019779A Pending JPS55133179A (en) 1979-04-03 1979-04-03 Picture processing system

Country Status (1)

Country Link
JP (1) JPS55133179A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01151378A (en) * 1987-11-06 1989-06-14 Grass Valley Group Inc:The Image signal processing
US4907152A (en) * 1986-09-25 1990-03-06 The Boeing Company Method of improving CT resolution
JPH06348842A (en) * 1993-06-11 1994-12-22 Hitachi Ltd Noise reducing filter
JP2001014461A (en) * 2000-01-01 2001-01-19 Hitachi Ltd Image processing method
US6826291B2 (en) 1997-09-03 2004-11-30 Hitachi, Ltd. Method and system for embedding information into contents
WO2005111933A1 (en) * 2004-05-19 2005-11-24 Sony Corporation Image processing apparatus, image processing method, program of image processing method, and recording medium in which program of image processing method has been recorded
US7382406B2 (en) 2001-11-08 2008-06-03 Olympus Corporation Noise reduction system, noise reduction method, recording medium, and electronic camera
WO2008146729A1 (en) * 2007-05-28 2008-12-04 Olympus Corporation Noise removal device, program, and method
JP2011125757A (en) * 2011-03-30 2011-06-30 Hitachi Aloka Medical Ltd Ultrasonic image data processor
US8270758B2 (en) 2009-03-31 2012-09-18 Olympus Corporation Image processing device and method, program recording medium, and imaging system

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4907152A (en) * 1986-09-25 1990-03-06 The Boeing Company Method of improving CT resolution
JP2531976B2 (en) * 1987-11-06 1996-09-04 ザ・グラス・バレー・グループ・インコーポレイテッド Video signal processing device
JPH01151378A (en) * 1987-11-06 1989-06-14 Grass Valley Group Inc:The Image signal processing
JPH06348842A (en) * 1993-06-11 1994-12-22 Hitachi Ltd Noise reducing filter
US6826291B2 (en) 1997-09-03 2004-11-30 Hitachi, Ltd. Method and system for embedding information into contents
JP2001014461A (en) * 2000-01-01 2001-01-19 Hitachi Ltd Image processing method
US7382406B2 (en) 2001-11-08 2008-06-03 Olympus Corporation Noise reduction system, noise reduction method, recording medium, and electronic camera
WO2005111933A1 (en) * 2004-05-19 2005-11-24 Sony Corporation Image processing apparatus, image processing method, program of image processing method, and recording medium in which program of image processing method has been recorded
JP2005332130A (en) * 2004-05-19 2005-12-02 Sony Corp Image processor, image processing method, program for image processing method and recording medium with its program recorded thereon
US7567724B2 (en) 2004-05-19 2009-07-28 Sony Corporation Image processing apparatus, image processing method, program of image processing method, and recording medium in which program of image processing method has been recorded
JP4534594B2 (en) * 2004-05-19 2010-09-01 ソニー株式会社 Image processing apparatus, image processing method, program for image processing method, and recording medium recording program for image processing method
WO2008146729A1 (en) * 2007-05-28 2008-12-04 Olympus Corporation Noise removal device, program, and method
US8270758B2 (en) 2009-03-31 2012-09-18 Olympus Corporation Image processing device and method, program recording medium, and imaging system
JP2011125757A (en) * 2011-03-30 2011-06-30 Hitachi Aloka Medical Ltd Ultrasonic image data processor

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