ES2139067T3 - Aparato y metodo para comprimir informacion. - Google Patents

Aparato y metodo para comprimir informacion.

Info

Publication number
ES2139067T3
ES2139067T3 ES94908589T ES94908589T ES2139067T3 ES 2139067 T3 ES2139067 T3 ES 2139067T3 ES 94908589 T ES94908589 T ES 94908589T ES 94908589 T ES94908589 T ES 94908589T ES 2139067 T3 ES2139067 T3 ES 2139067T3
Authority
ES
Spain
Prior art keywords
compression
generation
list
indices
coefficient
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
ES94908589T
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English (en)
Inventor
Jerome Mark Shapiro
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sarnoff Corp
Original Assignee
Sarnoff Corp
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 Sarnoff Corp filed Critical Sarnoff Corp
Application granted granted Critical
Publication of ES2139067T3 publication Critical patent/ES2139067T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • H04N19/60—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding
    • H04N19/63—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding using sub-band based transform, e.g. wavelets
    • H04N19/64—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding using sub-band based transform, e.g. wavelets characterised by ordering of coefficients or of bits for transmission
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00—Arrangements for image or video recognition or understanding
    • G06V10/20—Image preprocessing
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. 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
    • H04N19/60—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding
    • H04N19/63—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding using sub-band based transform, e.g. wavelets
    • H04N19/64—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding using sub-band based transform, e.g. wavelets characterised by ordering of coefficients or of bits for transmission
    • H04N19/647—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding using sub-band based transform, e.g. wavelets characterised by ordering of coefficients or of bits for transmission using significance based coding, e.g. Embedded Zerotrees of Wavelets [EZW] or Set Partitioning in Hierarchical Trees [SPIHT]

Abstract

UN APARATO Y METODO PARA LA COMPRESION DE SEÑALES, IMAGENES O VIDEOS, QUE CONSIGUE UNA EFICACIA ELEVADA DE COMPRESION DE MANERA COMPUTACIONALMENTE EFICIENTE, Y UN APARATO DECODIFICADOR CORRESPONDIENTE Y METODOS. ESTA TECNICA UTILIZA UNA CODIFICACION DE TRONCO NULO (126) DE LOS COEFICIENTES DE PASO DE ONDA (100), DE MANERA MUCHO MAS EFICAZ QUE OTRAS TECNICAS PREVIAS. LA CLAVE ES LA GENERACION DINAMICA DE LA LISTA DE INDICES DE COEFICIENTES (114,120) A SER ESCANEADOS, DONDE LA LISTA GENERADA DINAMICAMENTE (114-120) SOLO CONTIENE INDICES DE COEFICIENTES PARA LOS CUALES UN SIMBOLO TIENE QUE SER CODIFICADO. ESTO ES UNA MEJORA DRAMATICA SOBRE EL ARTE ANTERIOR EN EL CUAL UNA LISTA ESTATICA DE INDICES DE COEFICIENTES ERA UTILIZADA Y EN LA QUE CADA COEFICIENTE TIENE QUE SER COMPROBADO INDIVIDUALMENTE PARA VER SI: A) UN SIMBOLO TIENE QUE SER CODIFICADO, O B) ES COMPLETAMENTE PREDECIBLE. ADEMAS, UTILIZANDO LA GENERACION DE LISTAS DINAMICA (114-120), A MAYOR COMPRESION DE LA SEÑAL, MENOR EL TIEMPO NECESARIO PARA REALIZAR LA COMPRESION. POR LO TANTO, UTILIZANDO LA GENERACION DE LISTAS DINAMICA (114-120), LA CARGA COMPUTACIONAL ES PROPORCIONAL AL TAMAÑO DE LA CADENA DE BITS COMPRIMIDOS POR TRANSFERENCIA (134), EN LUGAR DE SER PROPORCIONALES AL TAMAÑO DE SEÑAL DE TRANSFERENCIA O IMAGEN.
ES94908589T 1993-01-22 1994-01-21 Aparato y metodo para comprimir informacion. Expired - Lifetime ES2139067T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/007,694 US5412741A (en) 1993-01-22 1993-01-22 Apparatus and method for compressing information

Publications (1)

Publication Number Publication Date
ES2139067T3 true ES2139067T3 (es) 2000-02-01

Family

ID=21727645

Family Applications (1)

Application Number Title Priority Date Filing Date
ES94908589T Expired - Lifetime ES2139067T3 (es) 1993-01-22 1994-01-21 Aparato y metodo para comprimir informacion.

Country Status (7)

Country Link
US (1) US5412741A (es)
EP (1) EP0680643B1 (es)
JP (1) JP3208487B2 (es)
KR (1) KR100306947B1 (es)
DE (1) DE69421690T2 (es)
ES (1) ES2139067T3 (es)
WO (1) WO1994017492A1 (es)

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WO1994017492A1 (en) 1994-08-04
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EP0680643A1 (en) 1995-11-08
US5412741A (en) 1995-05-02
KR960700487A (ko) 1996-01-20
DE69421690T2 (de) 2000-06-21
EP0680643B1 (en) 1999-11-17

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