WO2014024373A8 - 画像強調装置、画像強調方法 - Google Patents

画像強調装置、画像強調方法 Download PDF

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Publication number
WO2014024373A8
WO2014024373A8 PCT/JP2013/003570 JP2013003570W WO2014024373A8 WO 2014024373 A8 WO2014024373 A8 WO 2014024373A8 JP 2013003570 W JP2013003570 W JP 2013003570W WO 2014024373 A8 WO2014024373 A8 WO 2014024373A8
Authority
WO
WIPO (PCT)
Prior art keywords
signal
generates
image
image enhancing
input image
Prior art date
Application number
PCT/JP2013/003570
Other languages
English (en)
French (fr)
Other versions
WO2014024373A1 (ja
Inventor
合志　清一
Original Assignee
株式会社計測技術研究所
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 株式会社計測技術研究所 filed Critical 株式会社計測技術研究所
Priority to EP13799476.0A priority Critical patent/EP2733920B1/en
Priority to US14/124,374 priority patent/US9495732B2/en
Priority to CN201380001711.4A priority patent/CN103988488B/zh
Priority to KR1020137033150A priority patent/KR20150053871A/ko
Publication of WO2014024373A1 publication Critical patent/WO2014024373A1/ja
Publication of WO2014024373A8 publication Critical patent/WO2014024373A8/ja

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T5/00—Image enhancement or restoration
    • G06T5/73—Deblurring; Sharpening
    • 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
    • H04N1/409—Edge or detail enhancement; Noise or error suppression
    • H04N1/4092—Edge or detail enhancement
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/14—Picture signal circuitry for video frequency region
    • H04N5/142—Edging; Contouring
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/14—Picture signal circuitry for video frequency region
    • H04N5/20—Circuitry for controlling amplitude response
    • H04N5/205—Circuitry for controlling amplitude response for correcting amplitude versus frequency characteristic
    • H04N5/208—Circuitry for controlling amplitude response for correcting amplitude versus frequency characteristic for compensating for attenuation of high frequency components, e.g. crispening, aperture distortion correction
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/20—Special algorithmic details
    • G06T2207/20172—Image enhancement details
    • G06T2207/20192—Edge enhancement; Edge preservation

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Image Processing (AREA)
  • Picture Signal Circuits (AREA)
  • Facsimile Image Signal Circuits (AREA)

Abstract

　ナイキスト周波数を超える周波数成分により画像を先鋭化する。　本発明に係る画像強調装置１は、入力画像を鮮鋭化した出力画像を生成する画像強調装置１であって、前記入力画像を表す入力画像信号に含まれる周波数成分の少なくとも直流成分を除去することにより第１信号を生成するフィルタ部１０と、前記第１信号に対して前記第１信号の正負で非対称となる非線形処理を行い第２信号を生成する非線形処理部２０と、前記第２信号を調整して第３信号を生成するリミッタ３０と、前記第３信号を前記入力画像信号に加算して前記出力画像を表す出力画像信号を生成する加算部５０と、を備える。
PCT/JP2013/003570 2012-08-09 2013-06-06 画像強調装置、画像強調方法 WO2014024373A1 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP13799476.0A EP2733920B1 (en) 2012-08-09 2013-06-06 Iimage enhancing device and image enhancing method
US14/124,374 US9495732B2 (en) 2012-08-09 2013-06-06 Image enhancing device and image enhancement method
CN201380001711.4A CN103988488B (zh) 2012-08-09 2013-06-06 图像增强设备和图像增强方法
KR1020137033150A KR20150053871A (ko) 2012-08-09 2013-06-06 화상 강조 장치 및 그 방법

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012177466A JP5320538B1 (ja) 2012-08-09 2012-08-09 画像強調装置、画像強調方法
JP2012-177466 2012-08-09

Publications (2)

Publication Number Publication Date
WO2014024373A1 WO2014024373A1 (ja) 2014-02-13
WO2014024373A8 true WO2014024373A8 (ja) 2014-05-15

Family

ID=49595839

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2013/003570 WO2014024373A1 (ja) 2012-08-09 2013-06-06 画像強調装置、画像強調方法

Country Status (6)

Country Link
US (1) US9495732B2 (ja)
EP (1) EP2733920B1 (ja)
JP (1) JP5320538B1 (ja)
KR (1) KR20150053871A (ja)
CN (1) CN103988488B (ja)
WO (1) WO2014024373A1 (ja)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9648261B2 (en) * 2015-08-26 2017-05-09 Apple Inc. Account for clipped pixels in auto-focus statistics collection
CN105530406B (zh) * 2015-12-18 2018-06-12 成都国翼电子技术有限公司 一种基于历史帧图像统计值的智能增强方法
CN112351152B (zh) * 2019-08-06 2023-08-29 瑞昱半导体股份有限公司 影像处理电路与相关的影像处理方法

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6377313B1 (en) * 1999-09-02 2002-04-23 Techwell, Inc. Sharpness enhancement circuit for video signals
JP3879543B2 (ja) * 2002-03-08 2007-02-14 ソニー株式会社 画像処理装置
JP2008500757A (ja) * 2004-05-25 2008-01-10 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ 映像信号の鮮鋭度を強調するための方法およびシステム
JP5519122B2 (ja) * 2007-08-15 2014-06-11 富士フイルム株式会社 画像成分分離装置、方法、およびプログラム
US8508667B2 (en) * 2009-03-31 2013-08-13 Sharp Kabushiki Kaisha Image enhancing device, image enhancing method, image enhancing program and signal processing device
US8655101B2 (en) * 2009-06-04 2014-02-18 Sharp Kabushiki Kaisha Signal processing device, control method for signal processing device, control program, and computer-readable storage medium having the control program recorded therein
WO2010146728A1 (ja) * 2009-06-16 2010-12-23 シャープ株式会社 波形整形装置、等化器、受信システム、波形整形装置の制御方法、制御プログラム、および該制御プログラムを記録したコンピュータ読み取り可能な記録媒体
US8824825B2 (en) * 2009-11-17 2014-09-02 Sharp Kabushiki Kaisha Decoding device with nonlinear process section, control method for the decoding device, transmission system, and computer-readable recording medium having a control program recorded thereon
WO2011061957A1 (ja) * 2009-11-17 2011-05-26 シャープ株式会社 符号化装置、復号化装置、符号化装置の制御方法、復号化装置の制御方法、伝送システム、および制御プログラムを記録したコンピュータ読み取り可能な記録媒体
US8891898B2 (en) * 2010-02-15 2014-11-18 Sharp Kabushiki Kaisha Signal processing device and control program for sharpening images
US20120314969A1 (en) * 2010-02-25 2012-12-13 Sharp Kabushiki Kaisha Image processing apparatus and display device including the same, and image processing method
WO2012043407A1 (ja) * 2010-09-29 2012-04-05 シャープ株式会社 信号処理装置、制御プログラム、および集積回路
US9014502B2 (en) * 2011-03-15 2015-04-21 Sharp Kabushiki Kaisha Signal processing device, control program and integrated circuit

Also Published As

Publication number Publication date
US9495732B2 (en) 2016-11-15
CN103988488A (zh) 2014-08-13
EP2733920B1 (en) 2017-08-30
EP2733920A4 (en) 2015-07-15
CN103988488B (zh) 2018-05-08
JP2014036380A (ja) 2014-02-24
WO2014024373A1 (ja) 2014-02-13
JP5320538B1 (ja) 2013-10-23
KR20150053871A (ko) 2015-05-19
EP2733920A1 (en) 2014-05-21
US20140334742A1 (en) 2014-11-13

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