BRPI0414647A - técnica para simular grão de filme usando filtração de freqüência - Google Patents

técnica para simular grão de filme usando filtração de freqüência

Info

Publication number
BRPI0414647A
BRPI0414647A BRPI0414647-6A BRPI0414647A BRPI0414647A BR PI0414647 A BRPI0414647 A BR PI0414647A BR PI0414647 A BRPI0414647 A BR PI0414647A BR PI0414647 A BRPI0414647 A BR PI0414647A
Authority
BR
Brazil
Prior art keywords
film grain
technique
image
simulating
frequency filtration
Prior art date
Application number
BRPI0414647-6A
Other languages
English (en)
Inventor
Joan Llach
Jill Macdonald Boyce
Alexandros Tourapis
Original Assignee
Thomson Licensing
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 Thomson Licensing filed Critical Thomson Licensing
Publication of BRPI0414647A publication Critical patent/BRPI0414647A/pt

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/46—Embedding additional information in the video signal during the compression process
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T11/00—Two-dimensional [2D] image generation
    • G06T11/10—Texturing; Colouring; Generation of textures or colours
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T5/00—Image enhancement or restoration
    • G06T5/10—Image enhancement or restoration using non-spatial domain filtering
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T5/00—Image enhancement or restoration
    • G06T5/70—Denoising; Smoothing
    • 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
    • H04N1/41—Bandwidth or redundancy reduction
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/85—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression
    • H04N19/86—Methods 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/222—Studio circuitry; Studio devices; Studio equipment
    • H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/20—Special algorithmic details
    • G06T2207/20021—Dividing image into blocks, subimages or windows
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/20—Special algorithmic details
    • G06T2207/20048—Transform domain processing
    • G06T2207/20052—Discrete cosine transform [DCT]
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06T2207/20204—Removing film grain; Adding simulated film grain

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Image Processing (AREA)
  • Compression Of Band Width Or Redundancy In Fax (AREA)
  • Studio Circuits (AREA)

Abstract

"TéCNICA PARA SIMULAR GRãO DE FILME USANDO FILTRAçãO DE FREQüêNCIA". Simulação de grão de filme em uma imagem pode ocorrer pela compressão de uma imagem de vídeo, em seguida transmissão do vídeo comprimido juntamente com uma mensagem contendo pelo menos um parâmetro indicativo do grão de filme original, a um decodificador, e restauração da aparência da granularidade original de imagens tendo-se o decodificador simulando grão de filme com base no conteúdo da mensagem do grão de filme. Para melhorar a eficiência, um ou mais parâmetros de informação de grão de filme passam por ajuste de escala de acordo com um tamanho de bloco de pixels visado para blocos de pixels na imagem. Tal ajuste na escala permite o uso de conjunto de circuitos convencionais para realizar operações baseadas em bloco em relação a simulação de grão de filme.
BRPI0414647-6A 2003-09-23 2004-09-22 técnica para simular grão de filme usando filtração de freqüência BRPI0414647A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US50526003P 2003-09-23 2003-09-23
PCT/US2004/030950 WO2005032143A1 (en) 2003-09-23 2004-09-22 Technique for simulating film grain using frequency filtering

Publications (1)

Publication Number Publication Date
BRPI0414647A true BRPI0414647A (pt) 2006-11-14

Family

ID=34392999

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0414647-6A BRPI0414647A (pt) 2003-09-23 2004-09-22 técnica para simular grão de filme usando filtração de freqüência

Country Status (11)

Country Link
US (1) US7889939B2 (pt)
EP (1) EP1676447A1 (pt)
JP (2) JP4931587B2 (pt)
KR (1) KR101114743B1 (pt)
CN (1) CN1857005B (pt)
AU (2) AU2004306091B2 (pt)
BR (1) BRPI0414647A (pt)
CA (1) CA2538832C (pt)
RU (1) RU2342703C2 (pt)
WO (1) WO2005032143A1 (pt)
ZA (1) ZA200602349B (pt)

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JP2005100100A (ja) * 2003-09-25 2005-04-14 Toyota Motor Corp 車輪情報処理装置および車輪情報処理方法
EP1673944B1 (en) * 2003-10-14 2019-09-04 InterDigital VC Holdings, Inc. Technique for bit-accurate film grain simulation
JP4066367B2 (ja) * 2003-11-28 2008-03-26 ノーリツ鋼機株式会社 画像ノイズ除去方法
US8150206B2 (en) * 2004-03-30 2012-04-03 Thomson Licensing Method and apparatus for representing image granularity by one or more parameters
JP4543873B2 (ja) * 2004-10-18 2010-09-15 ソニー株式会社 画像処理装置および処理方法
CN101044510B (zh) 2004-10-18 2012-01-04 汤姆森特许公司 胶片颗粒模拟方法
US7738722B2 (en) * 2004-10-21 2010-06-15 Thomson Licensing Technique for adaptive de-blocking of block-based film grain patterns
CA2803789C (en) 2004-11-12 2014-04-15 Thomson Licensing Film grain simulation for normal play and trick mode play for video playback systems
RU2371769C2 (ru) 2004-11-16 2009-10-27 Томсон Лайсенсинг Способ имитации зернистости фотопленки на основе предварительно вычисленных коэффициентов преобразования
KR101270755B1 (ko) 2004-11-16 2013-06-03 톰슨 라이센싱 비디오 시스템에서 비트-정확한 시뮬레이션을 위한 필름 그레인 ｓｅｉ 메시지 삽입
MX2007005651A (es) 2004-11-17 2007-06-05 Thomson Licensing Metodo de simulacion de grano de pelicula exacto de bits con base en coeficientes transformados pre-computados.
KR101208158B1 (ko) * 2004-11-22 2012-12-05 톰슨 라이센싱 필름 그레인 시뮬레이션을 위한 필름 그레인 캐시 분할방법, 장치 및 시스템
ZA200704141B (en) * 2004-11-23 2008-08-27 Thomson Licensing Low-complexity film grain simulation technique
US8023567B2 (en) * 2004-11-24 2011-09-20 Thomson Licensing Film grain simulation technique for use in media playback devices
EP1670255A1 (en) * 2004-12-08 2006-06-14 Koninklijke Philips Electronics N.V. Electronic image processing method and device with linked random generators
ES2323287T3 (es) * 2005-01-12 2009-07-10 Koninklijke Philips Electronics N.V. Percepcion de profundidad.
US7664337B2 (en) * 2005-12-20 2010-02-16 Marvell International Ltd. Film grain generation and addition
JP2007235227A (ja) * 2006-02-27 2007-09-13 Toshiba Corp 映像再生装置、および映像再生方法
CN101467179B (zh) * 2006-06-21 2012-08-22 汤姆森许可贸易公司 自动的胶片颗粒调节
US7742652B2 (en) 2006-12-21 2010-06-22 Sharp Laboratories Of America, Inc. Methods and systems for image noise processing
US8213500B2 (en) 2006-12-21 2012-07-03 Sharp Laboratories Of America, Inc. Methods and systems for processing film grain noise
US10715834B2 (en) 2007-05-10 2020-07-14 Interdigital Vc Holdings, Inc. Film grain simulation based on pre-computed transform coefficients
US8432975B2 (en) * 2008-01-18 2013-04-30 Mediatek Inc. Apparatus and method for processing a picture frame
US20090328093A1 (en) * 2008-06-30 2009-12-31 At&T Intellectual Property I, L.P. Multimedia Content Filtering
CN102377929B (zh) * 2008-09-03 2015-01-28 奥林巴斯映像株式会社 图像处理装置、摄像装置以及图像处理方法
JP5751679B2 (ja) * 2010-01-15 2015-07-22 マーベル ワールド トレード リミテッド 圧縮アーチファクトをマスクするためのフィルムグレインの利用
JP5484310B2 (ja) 2010-12-24 2014-05-07 キヤノン株式会社 画像処理装置及び画像処理装置の制御方法
CN102324091A (zh) * 2011-09-08 2012-01-18 深圳市万兴软件有限公司 一种图像加噪方法和装置
KR101979634B1 (ko) 2012-12-13 2019-05-20 삼성전자주식회사 화질 개선을 위한 영상 처리 장치 및 그 방법
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CN114945944B (zh) 2019-12-19 2025-08-19 杜比实验室特许公司 用于数字图像的噪声合成
CN112525102B (zh) * 2020-12-09 2021-07-23 吉林大学 基于电流变液的汽车形貌测量系统噪声模拟仪
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Also Published As

Publication number Publication date
KR20070029624A (ko) 2007-03-14
JP2012100322A (ja) 2012-05-24
RU2342703C2 (ru) 2008-12-27
WO2005032143A9 (en) 2005-10-13
AU2010202973B2 (en) 2011-05-12
JP4931587B2 (ja) 2012-05-16
KR101114743B1 (ko) 2012-03-13
US7889939B2 (en) 2011-02-15
EP1676447A1 (en) 2006-07-05
AU2010202973A1 (en) 2010-08-05
JP2007507172A (ja) 2007-03-22
CA2538832C (en) 2013-02-12
RU2006113613A (ru) 2006-08-27
CN1857005B (zh) 2010-04-28
AU2004306091A1 (en) 2005-04-07
US20070036452A1 (en) 2007-02-15
CA2538832A1 (en) 2005-04-07
CN1857005A (zh) 2006-11-01
ZA200602349B (en) 2007-10-31
AU2004306091B2 (en) 2010-08-12
WO2005032143A1 (en) 2005-04-07
HK1093642A1 (zh) 2007-03-02

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Legal Events

Date Code Title Description
B15K Others concerning applications: alteration of classification

Ipc: H04N 5/262 (2006.01), G06T 5/00 (2006.01), G06T 5/

B07A Application suspended after technical examination (opinion) [chapter 7.1 patent gazette]
B09B Patent application refused [chapter 9.2 patent gazette]
B12B Appeal against refusal [chapter 12.2 patent gazette]
B25G Requested change of headquarter approved

Owner name: THOMSON LICENSING (FR)

B25G Requested change of headquarter approved

Owner name: THOMSON LICENSING (FR)

B25A Requested transfer of rights approved

Owner name: INTERDIGITAL VC HOLDINGS, INC. (US)

B11D Dismissal acc. art. 38, par 2 of ipl - failure to pay fee after grant in time