BRPI0518052A - técnica de simulação de granulação de filme de baixa complexidade - Google Patents

técnica de simulação de granulação de filme de baixa complexidade

Info

Publication number
BRPI0518052A
BRPI0518052A BRPI0518052-0A BRPI0518052A BRPI0518052A BR PI0518052 A BRPI0518052 A BR PI0518052A BR PI0518052 A BRPI0518052 A BR PI0518052A BR PI0518052 A BRPI0518052 A BR PI0518052A
Authority
BR
Brazil
Prior art keywords
film
film grain
low complexity
cutoff frequencies
simulation technique
Prior art date
Application number
BRPI0518052-0A
Other languages
English (en)
Inventor
Cristina Gomila
Joan Llach
Jeffrey Allen Cooper
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 BRPI0518052A publication Critical patent/BRPI0518052A/pt
Publication of BRPI0518052B1 publication Critical patent/BRPI0518052B1/pt

Links

Classifications

    • 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
    • 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
    • H04N19/60—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding
    • 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
    • H04N19/467—Embedding additional information in the video signal during the compression process characterised by the embedded information being invisible, e.g. watermarking
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/84—Television signal recording using optical recording
    • H04N5/87—Producing a motion picture film from a television signal
    • 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
    • G06T2207/10—Image acquisition modality
    • G06T2207/10016—Video; Image sequence
    • 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
    • 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
    • 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
    • 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

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)
  • Image Analysis (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Complex Calculations (AREA)
  • Laminated Bodies (AREA)

Abstract

TéCNICA DE SIMULAçAO DE GRANULAçáO DE FILME DE BAIXA COMPLEXIDADE.A simulação de granulação de filme em uma imagem de vídeo ocorre primeiro criando um bloco (isto é, um arranjo de matriz) de coeficientes transformados para um conjunto de freqüências de corte fHL, fvL, fHH e f~ associado com um padrão desejado de granulação de filme. (As freqúências decorte fHL, fvL, fHH e f~ representam freqüências de interrupção, em duas dimensões, de um filtro que caracteriza o padrão desejado de granulação de filme) . O bloco de coeficientes transformados passa por uma transformada inversa para produzir uma amostra de granulação de filme bit exato e amostra bit exato passa por expansão para permitir a combinação com um sinal de vídeo para simular granulação de filme no sinal.
BRPI0518052-0A 2004-11-23 2005-09-26 Método e aparelho para simular granulação de filme BRPI0518052B1 (pt)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US63064004P 2004-11-23 2004-11-23
US60/630.640 2004-11-23
PCT/US2005/034723 WO2006057703A1 (en) 2004-11-23 2005-09-26 Low-complexity film grain simulation technique

Publications (2)

Publication Number Publication Date
BRPI0518052A true BRPI0518052A (pt) 2008-10-28
BRPI0518052B1 BRPI0518052B1 (pt) 2019-07-16

Family

ID=35457516

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0518052-0A BRPI0518052B1 (pt) 2004-11-23 2005-09-26 Método e aparelho para simular granulação de filme

Country Status (15)

Country Link
US (1) US8472526B2 (pt)
EP (1) EP1815688B1 (pt)
JP (1) JP4829893B2 (pt)
KR (1) KR101166948B1 (pt)
CN (1) CN101065970B (pt)
AT (1) ATE435568T1 (pt)
AU (1) AU2005309975B2 (pt)
BR (1) BRPI0518052B1 (pt)
CA (1) CA2586896C (pt)
DE (1) DE602005015249D1 (pt)
MX (1) MX2007006211A (pt)
MY (1) MY139472A (pt)
RU (1) RU2377651C2 (pt)
WO (1) WO2006057703A1 (pt)
ZA (1) ZA200704141B (pt)

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Also Published As

Publication number Publication date
CN101065970A (zh) 2007-10-31
CA2586896A1 (en) 2006-06-01
JP2008521340A (ja) 2008-06-19
CN101065970B (zh) 2010-09-29
BRPI0518052B1 (pt) 2019-07-16
DE602005015249D1 (de) 2009-08-13
EP1815688A1 (en) 2007-08-08
CA2586896C (en) 2013-11-19
HK1107480A1 (en) 2008-04-03
AU2005309975A1 (en) 2006-06-01
MY139472A (en) 2009-10-30
US8472526B2 (en) 2013-06-25
KR101166948B1 (ko) 2012-07-19
EP1815688B1 (en) 2009-07-01
RU2007123610A (ru) 2008-12-27
ATE435568T1 (de) 2009-07-15
US20080152250A1 (en) 2008-06-26
AU2005309975B2 (en) 2010-09-16
ZA200704141B (en) 2008-08-27
WO2006057703A1 (en) 2006-06-01
RU2377651C2 (ru) 2009-12-27
KR20070088644A (ko) 2007-08-29
MX2007006211A (es) 2007-06-12
JP4829893B2 (ja) 2011-12-07

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