AR029032A1 - Un metodo para comprimir una imagen digital, y una disposicion para llevar a la practica dicho metodo - Google Patents

Un metodo para comprimir una imagen digital, y una disposicion para llevar a la practica dicho metodo

Info

Publication number
AR029032A1
AR029032A1 ARP010100387A ARP010100387A AR029032A1 AR 029032 A1 AR029032 A1 AR 029032A1 AR P010100387 A ARP010100387 A AR P010100387A AR P010100387 A ARP010100387 A AR P010100387A AR 029032 A1 AR029032 A1 AR 029032A1
Authority
AR
Argentina
Prior art keywords
blocks
block
compress
provision
quality
Prior art date
Application number
ARP010100387A
Other languages
English (en)
Inventor
Kadayam S Thyagarajan
Steven A Morley
Original Assignee
Qualcomm Inc
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 Qualcomm Inc filed Critical Qualcomm Inc
Publication of AR029032A1 publication Critical patent/AR029032A1/es

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
    • H04N19/90—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using coding techniques not provided for in groups H04N19/10-H04N19/85, e.g. fractals
    • H04N19/93—Run-length 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
    • H04N19/10—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
    • H04N19/10—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
    • H04N19/124—Quantisation
    • H04N19/126—Details of normalisation or weighting functions, e.g. normalisation matrices or variable uniform quantisers
    • 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
    • H04N19/146—Data rate or code amount at the encoder output
    • H04N19/147—Data rate or code amount at the encoder output according to rate distortion criteria
    • 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
    • H04N19/154—Measured or subjectively estimated visual quality after decoding, e.g. measurement of distortion
    • 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
    • H04N19/90—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using coding techniques not provided for in groups H04N19/10-H04N19/85, e.g. fractals
    • H04N19/96—Tree coding, e.g. quad-tree coding

Abstract

Un método para comprimir una imagen digital, y una disposicion para llevar a la práctica dicho método. Se reivindica un sistema y método para la compresion de imágenes, basada en la calidad, en los cuales se utilizan bloques y sub-bloques adaptivamente dimensionados en magnitud, de coeficientes de datos de transformada discreta de coseno, y un factor de escala de cuantizacion basado en la calidad. Un elemento de asignacion de magnitud a los bloques, en un elemento codificador, selecciona el bloque o sub-bloque de un bloque de entrada de datos de pixel a ser procesados. Los bloques con varianzas superiores a un umbral son subdivididos, mientras que los bloques con varianzas inferiores a un umbral no son subdivididos. Un elemento de transformada transforma los valores de pixel de los bloques seleccionados en el dominio de las frecuencias. Los valores del dominio de las frecuencias son cuantizados sea en una base de bloque por bloque sea en una base de marco por marco, utilizándose un factor de escala que se correlaciona con la calidad de la imagen. Los datos son seguidamente serializados y codificados en preparacion para su transmision.
ARP010100387A 2000-01-28 2001-01-29 Un metodo para comprimir una imagen digital, y una disposicion para llevar a la practica dicho metodo AR029032A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US09/494,192 US6600836B1 (en) 2000-01-28 2000-01-28 Quality based image compression

Publications (1)

Publication Number Publication Date
AR029032A1 true AR029032A1 (es) 2003-06-04

Family

ID=23963428

Family Applications (2)

Application Number Title Priority Date Filing Date
ARP010100387A AR029032A1 (es) 2000-01-28 2001-01-29 Un metodo para comprimir una imagen digital, y una disposicion para llevar a la practica dicho metodo
ARP070100074A AR058948A2 (es) 2000-01-28 2007-01-08 Un metoddo para comprimir una imagen digital una disposicion para llevar a la practica dicho metodo

Family Applications After (1)

Application Number Title Priority Date Filing Date
ARP070100074A AR058948A2 (es) 2000-01-28 2007-01-08 Un metoddo para comprimir una imagen digital una disposicion para llevar a la practica dicho metodo

Country Status (15)

Country Link
US (3) US6600836B1 (es)
EP (1) EP1252773A1 (es)
JP (1) JP5107495B2 (es)
KR (1) KR100788220B1 (es)
CN (2) CN101018336B (es)
AR (2) AR029032A1 (es)
AU (1) AU784084B2 (es)
CA (1) CA2398386C (es)
HK (1) HK1053213A1 (es)
MX (1) MXPA02007274A (es)
MY (2) MY127241A (es)
NZ (1) NZ520291A (es)
TW (1) TW517501B (es)
WO (1) WO2001056298A1 (es)
ZA (1) ZA200205897B (es)

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US6600836B1 (en) 2003-07-29
AU3460701A (en) 2001-08-07
ZA200205897B (en) 2003-11-05
KR100788220B1 (ko) 2007-12-26
WO2001056298A1 (en) 2001-08-02
CA2398386A1 (en) 2001-08-02
TW517501B (en) 2003-01-11
US20070071335A1 (en) 2007-03-29
JP5107495B2 (ja) 2012-12-26
CN1303820C (zh) 2007-03-07
NZ520291A (en) 2004-06-25
US7136534B2 (en) 2006-11-14
JP2003521178A (ja) 2003-07-08
CN101018336A (zh) 2007-08-15
AU784084B2 (en) 2006-02-02
HK1053213A1 (en) 2003-10-10
US20030202707A1 (en) 2003-10-30
KR20030005171A (ko) 2003-01-17
MY127241A (en) 2006-11-30
MXPA02007274A (es) 2003-02-12
EP1252773A1 (en) 2002-10-30
CA2398386C (en) 2012-02-28
US7460723B2 (en) 2008-12-02
AR058948A2 (es) 2008-03-05
CN101018336B (zh) 2012-04-04
MY141154A (en) 2010-03-15
CN1419787A (zh) 2003-05-21

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