WO2009069292A1 - 画像ノイズ除去方法及び装置 - Google Patents

画像ノイズ除去方法及び装置 Download PDF

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Publication number
WO2009069292A1
WO2009069292A1 PCT/JP2008/003481 JP2008003481W WO2009069292A1 WO 2009069292 A1 WO2009069292 A1 WO 2009069292A1 JP 2008003481 W JP2008003481 W JP 2008003481W WO 2009069292 A1 WO2009069292 A1 WO 2009069292A1
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WO
WIPO (PCT)
Prior art keywords
filter
image
noise
frame
respect
Prior art date
Application number
PCT/JP2008/003481
Other languages
English (en)
French (fr)
Inventor
Yutaka Yamamoto
Masaaki Nagahara
Akira Kobayashi
Original Assignee
Kyoto University
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
Priority to US12/745,011 priority Critical patent/US8611680B2/en
Application filed by Kyoto University filed Critical Kyoto University
Priority to CN2008801184700A priority patent/CN101878640A/zh
Priority to JP2009543663A priority patent/JP5142300B2/ja
Priority to EP08855253A priority patent/EP2226999A4/en
Publication of WO2009069292A1 publication Critical patent/WO2009069292A1/ja

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/102Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
    • H04N19/117Filters, e.g. for pre-processing or post-processing
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/134Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
    • H04N19/136Incoming video signal characteristics or properties
    • H04N19/14Coding unit complexity, e.g. amount of activity or edge presence estimation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/169Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
    • H04N19/17Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object
    • H04N19/176Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a block, e.g. a macroblock
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/42Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation
    • H04N19/436Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation using parallelised computational arrangements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/85Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression
    • H04N19/86Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression involving reduction of coding artifacts, e.g. of blockiness

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computing Systems (AREA)
  • Theoretical Computer Science (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Compression Of Band Width Or Redundancy In Fax (AREA)
  • Image Processing (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Picture Signal Circuits (AREA)

Abstract

 復号化された状態の1フレーム分の画像データに対しFFT分析を行い、原信号が1次減衰特性であると仮定したカットオフ周波数を水平方向、垂直方向毎に求める(S1、S2)。予め異なるカットオフ周波数に対応して異なるパラメータを持つように設計されたサンプル値H∞フィルタ(デジタルフィルタ)を選択し(S3)、このフィルタを用いて復号化された画像データの水平方向及び垂直方向にそれぞれフィルタリング処理を行う(S4)。1フレームの画像毎に原画像のアナログ周波数特性の相違が考慮されるので、原画像に存在するノイズ様の情報が除去されにくくなり、符号化/復号化に伴うモスキートノイズやブロックノイズを効果的に除去することができる。
PCT/JP2008/003481 2007-11-30 2008-11-26 画像ノイズ除去方法及び装置 WO2009069292A1 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US12/745,011 US8611680B2 (en) 2007-11-30 2008-11-11 Method and apparatus for removing image noise
CN2008801184700A CN101878640A (zh) 2007-11-30 2008-11-26 图像噪声去除方法及装置
JP2009543663A JP5142300B2 (ja) 2007-11-30 2008-11-26 画像ノイズ除去方法及び装置
EP08855253A EP2226999A4 (en) 2007-11-30 2008-11-26 METHOD AND DEVICE FOR SUPPRESSING IMAGE RUSTS

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007309801A JP2010199631A (ja) 2007-11-30 2007-11-30 画像ノイズ除去方法
JP2007-309801 2007-11-30

Publications (1)

Publication Number Publication Date
WO2009069292A1 true WO2009069292A1 (ja) 2009-06-04

Family

ID=40678203

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/003481 WO2009069292A1 (ja) 2007-11-30 2008-11-26 画像ノイズ除去方法及び装置

Country Status (5)

Country Link
US (1) US8611680B2 (ja)
EP (1) EP2226999A4 (ja)
JP (2) JP2010199631A (ja)
CN (1) CN101878640A (ja)
WO (1) WO2009069292A1 (ja)

Cited By (2)

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Publication number Priority date Publication date Assignee Title
JP2011095807A (ja) * 2009-10-27 2011-05-12 Seiko Epson Corp 画像処理装置および画像処理方法
US8923653B2 (en) 2011-06-27 2014-12-30 Yutaka Yamamoto Super-resolution processing method and system

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JP5343055B2 (ja) * 2010-09-13 2013-11-13 本田技研工業株式会社 撮像装置および撮像方法
CN102256031A (zh) * 2011-04-02 2011-11-23 海华电子企业(中国)有限公司 短波气象传真图像数字化处理方法和系统
CN103002197B (zh) * 2012-09-27 2016-04-13 深圳市创维群欣安防科技有限公司 一种信号数据处理方法、装置及智能终端
CA2908323C (en) * 2013-07-15 2021-07-06 Mediatek Inc. Method of sample adaptive offset processing for video coding
CN104658488B (zh) * 2013-11-18 2017-09-29 华为技术有限公司 下采样方法及装置
US9547083B2 (en) * 2014-09-12 2017-01-17 Qualcomm Incorporated Determining whether a target object was present during a scanning operation
DE102017129809A1 (de) 2017-09-29 2019-04-04 Festool Gmbh Mobile Werkzeugmaschine
DE102017129812A1 (de) * 2017-09-29 2019-04-04 Festool Gmbh Mobile Werkzeugmaschine
CN108683866B (zh) * 2018-05-30 2021-02-12 北京图森智途科技有限公司 图像处理及传输方法、图像处理器及相关存储介质和系统
CN108931574A (zh) * 2018-06-05 2018-12-04 北京领示科技有限公司 一种超声无损检测数据的结构噪声数字滤波方法
CN113763270B (zh) * 2021-08-30 2024-05-07 青岛信芯微电子科技股份有限公司 蚊式噪声去除方法及电子设备

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011095807A (ja) * 2009-10-27 2011-05-12 Seiko Epson Corp 画像処理装置および画像処理方法
US8923653B2 (en) 2011-06-27 2014-12-30 Yutaka Yamamoto Super-resolution processing method and system

Also Published As

Publication number Publication date
CN101878640A (zh) 2010-11-03
EP2226999A4 (en) 2010-11-17
US8611680B2 (en) 2013-12-17
US20110002552A1 (en) 2011-01-06
JPWO2009069292A1 (ja) 2011-04-07
JP2010199631A (ja) 2010-09-09
JP5142300B2 (ja) 2013-02-13
EP2226999A1 (en) 2010-09-08

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