MX2007005652A - Metodo de simulacion de grano de pelicula con base en coeficientes de transformacion pre-computados. - Google Patents

Metodo de simulacion de grano de pelicula con base en coeficientes de transformacion pre-computados.

Info

Publication number
MX2007005652A
MX2007005652A MX2007005652A MX2007005652A MX2007005652A MX 2007005652 A MX2007005652 A MX 2007005652A MX 2007005652 A MX2007005652 A MX 2007005652A MX 2007005652 A MX2007005652 A MX 2007005652A MX 2007005652 A MX2007005652 A MX 2007005652A
Authority
MX
Mexico
Prior art keywords
film grain
computed
method based
transform coefficients
simulation method
Prior art date
Application number
MX2007005652A
Other languages
English (en)
Inventor
Cristina Gomila
Joan Llach
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 MX2007005652A publication Critical patent/MX2007005652A/es

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T9/00—Image coding
    • G06T5/70—
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T5/00—Image enhancement or restoration
    • G06T5/10—Image enhancement or restoration by 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
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/102—Methods 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
    • H04N19/117—Filters, e.g. for pre-processing or post-processing
    • 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
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/134—Methods 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
    • H04N19/136—Incoming video signal characteristics or properties
    • 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
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/169—Methods 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
    • H04N19/17—Methods 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
    • H04N19/176—Methods 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
    • 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
    • H04N19/60—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding
    • H04N19/625—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding using discrete cosine transform [DCT]
    • 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
    • H04N19/80—Details of filtering operations specially adapted for video compression, e.g. for pixel interpolation
    • 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
    • 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
    • G06T2207/10—Image acquisition modality
    • G06T2207/10016—Video; Image sequence
    • 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
    • G06T2207/20048—Transform domain processing
    • G06T2207/20052—Discrete cosine transform [DCT]
    • 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
    • G06T2207/20204—Removing film grain; Adding simulated film grain

Abstract

La simulacion de grano de pelicula dentro de un receptor (11) ocurre al primero obtener por lo menos un bloque de coeficientes transformados pre-computados. El bloque de coeficientes transformados pre-computado experimenta la filtracion en respuesta a un rango de frecuencia que caracteriza un patron deseado de grao de pelicula. En la practica, el rango de frecuencia se encuentra dentro de un grupo de frecuencias de corte fHL, fVL, fHH y fVH de un filtro en dos dimensiones que caracteriza el patron de grano de pelicula deseado. Despues, el grupo filtrado de coeficientes experimenta una transformacion inversa para producir el patron de grano de pelicula.
MX2007005652A 2004-11-16 2005-10-26 Metodo de simulacion de grano de pelicula con base en coeficientes de transformacion pre-computados. MX2007005652A (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US62828604P 2004-11-16 2004-11-16
PCT/US2005/038503 WO2006055193A1 (en) 2004-11-16 2005-10-26 Film grain simulation method based on pre-computed transform coefficients

Publications (1)

Publication Number Publication Date
MX2007005652A true MX2007005652A (es) 2007-06-05

Family

ID=35735066

Family Applications (1)

Application Number Title Priority Date Filing Date
MX2007005652A MX2007005652A (es) 2004-11-16 2005-10-26 Metodo de simulacion de grano de pelicula con base en coeficientes de transformacion pre-computados.

Country Status (18)

Country Link
US (1) US9177364B2 (es)
EP (1) EP1812904B1 (es)
JP (1) JP4825808B2 (es)
KR (1) KR101170584B1 (es)
CN (1) CN101057259B (es)
AT (1) ATE553455T1 (es)
AU (1) AU2005306921B2 (es)
BR (1) BRPI0517743B1 (es)
CA (1) CA2587201C (es)
ES (1) ES2381982T3 (es)
HK (1) HK1107439A1 (es)
MX (1) MX2007005652A (es)
MY (1) MY159896A (es)
PL (1) PL1812904T3 (es)
PT (1) PT1812904E (es)
RU (1) RU2371769C2 (es)
WO (1) WO2006055193A1 (es)
ZA (1) ZA200703568B (es)

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US20070297515A1 (en) 2007-12-27
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