ES2137358T3 - Metodos para evitar errores de redondeo cuando los coeficientes de transformacion que representan una señal de imagen en movimiento se transforman inversamente. - Google Patents

Metodos para evitar errores de redondeo cuando los coeficientes de transformacion que representan una señal de imagen en movimiento se transforman inversamente.

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Publication number
ES2137358T3
ES2137358T3 ES94907708T ES94907708T ES2137358T3 ES 2137358 T3 ES2137358 T3 ES 2137358T3 ES 94907708 T ES94907708 T ES 94907708T ES 94907708 T ES94907708 T ES 94907708T ES 2137358 T3 ES2137358 T3 ES 2137358T3
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Spain
Prior art keywords
transformation coefficients
parity
transformation
group
transformed
Prior art date
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Expired - Lifetime
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ES94907708T
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English (en)
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Teruhiko Suzuki
Yoichi Yagasaki
Tatsuya Sudo
Toru Okazaki
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Sony Corp
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Sony Corp
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=26379647&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ES2137358(T3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Sony Corp filed Critical Sony Corp
Application granted granted Critical
Publication of ES2137358T3 publication Critical patent/ES2137358T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
    • G06F17/10—Complex mathematical operations
    • G06F17/14—Fourier, Walsh or analogous domain transformations, e.g. Laplace, Hilbert, Karhunen-Loeve, transforms
    • G06F17/147—Discrete orthonormal transforms, e.g. discrete cosine transform, discrete sine transform, and variations therefrom, e.g. modified discrete cosine transform, integer transforms approximating the discrete cosine transform
    • 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
    • H04N19/169—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
    • H04N19/18—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 a set of transform coefficients
    • 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
    • H04N19/42—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation
    • 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
    • H04N19/44—Decoders specially adapted therefor, e.g. video decoders which are asymmetric with respect to the encoder
    • H04N19/45—Decoders specially adapted therefor, e.g. video decoders which are asymmetric with respect to the encoder performing compensation of the inverse transform mismatch, e.g. Inverse Discrete Cosine Transform [IDCT] mismatch
    • 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
    • H04N19/60—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding
    • H04N19/61—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding in combination with predictive 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
    • H04N19/85—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression
    • 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
    • H04N19/89—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression involving methods or arrangements for detection of transmission errors at the decoder
    • 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
    • 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
    • H04N19/65—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using error resilience

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Pure & Applied Mathematics (AREA)
  • Mathematical Optimization (AREA)
  • Data Mining & Analysis (AREA)
  • Mathematical Analysis (AREA)
  • Computational Mathematics (AREA)
  • Discrete Mathematics (AREA)
  • Algebra (AREA)
  • Databases & Information Systems (AREA)
  • Software Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Color Television Systems (AREA)
  • Error Detection And Correction (AREA)
  • Television Signal Processing For Recording (AREA)
  • Complex Calculations (AREA)
  • Image Processing (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
  • Detection And Correction Of Errors (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Color Television Image Signal Generators (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)

Abstract

SE PRODUCE ERROR DE DESADAPTACION EN EL DECODIFICADOR LOCAL DE UN COMPRESOR NORMALIZADO MPEG PARA UNA SEÑAL DE IMAGEN EN MOVIMIENTO, Y EN UN EXPANSOR NORMALIZADO MPEG PARA UNA SEÑAL DE IMAGEN EN MOVIMIENTO COMPRIMIDA. ESTO ES PORQUE POR LA CARENCIA DE UNA NORMA PARA REDONDEAR RESULTADOS DE *,5 (* ES UN ENTERO) OBTENIDOS CUANDO UN GRUPO DE COEFICIENTES DE TRANSFORMACION QUE RESULTAN DE COMPRIMIR LA SEÑAL DE IMAGEN EN MOVIMIENTO SON TRANSFORMADOS INVERSAMENTE ORTOGONALMENTE. LA INVENCION EVITA ERRORES DE DESADAPTACION PREPROCESANDO EL GRUPO DE COEFICIENTES DE TRANSFORMACION ANTES DE LA TRANSFORMACION (15) ORTOGONAL INVERSA. LOS COEFICIENTES DE TRANSFORMACION DEL GRUPO SON SUMADOS (23A) Y LA PARIDAD (IMPAR O PAR) DE LA SUMA ES JUZGADA (21). CUANDO LA PARIDAD ES DICTAMINADA PARA SER PAR, LA PARIDAD DE UNO DE LOS COEFICIENTES DE TRANSFORMACION DEL GRUPO ES INVERTIDA (28) PARA PROPORCIONAR UN COEFICIENTE DE TRANSFORMACION DE PARIDAD INVERTIDA. ESTO HACE LA PARIDAD DE LA SUMA IMPAR. ENTONCES, CUANDO EL GRUPO DE COEFICIENTES DE TRANSFORMACION QUE INCLUYE LOS COEFICIENTES DE TRANSFORMACION DE PARIDAD INVERTIDA SON TRANSFORMADOS (15) ORTOGONALMENTE INVERSAMENTE, NINGUNO DE LOS RESULTADOS DE LA TRANSFORMACION ORTOGONAL TENDRA UN VALOR DE *,5.
ES94907708T 1993-03-01 1994-03-01 Metodos para evitar errores de redondeo cuando los coeficientes de transformacion que representan una señal de imagen en movimiento se transforman inversamente. Expired - Lifetime ES2137358T3 (es)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP4020393 1993-03-01
JP5990993 1993-03-19
PCT/JP1994/000329 WO1994021083A1 (en) 1993-03-01 1994-03-01 Methods and apparatus for preventing rounding errors when transform coefficients representing a motion picture signal are inversely transformed

Publications (1)

Publication Number Publication Date
ES2137358T3 true ES2137358T3 (es) 1999-12-16

Family

ID=26379647

Family Applications (5)

Application Number Title Priority Date Filing Date
ES98119828T Expired - Lifetime ES2209032T3 (es) 1993-03-01 1994-03-01 Aparato para evitar errores de redondeo cuando los coeficientes de transformada que representan una señal de imagen en movimiento se transforman inversamente.
ES10011843T Expired - Lifetime ES2389766T3 (es) 1993-03-01 1994-03-01 Descodificación de un bloque de coeficientes de transformada cuantificados, en donde una paridad par de la suma de los coeficientes de transformada cuantificados inversamente es ajustada a una paridad impar
ES94907708T Expired - Lifetime ES2137358T3 (es) 1993-03-01 1994-03-01 Metodos para evitar errores de redondeo cuando los coeficientes de transformacion que representan una señal de imagen en movimiento se transforman inversamente.
ES99113786T Expired - Lifetime ES2389797T3 (es) 1993-03-01 1994-03-01 Aparato para evitar errores de redondeo en la transformación inversa de coeficientes de transformada de una señal de imagen en movimiento
ES10011642T Expired - Lifetime ES2389718T3 (es) 1993-03-01 1994-03-01 Descodificación de un bloque de coeficientes de transformada cuantificados, en donde una paridad par de la suma de los coeficientes de transformada cuantificados inversamente es ajustada a una paridad impar

Family Applications Before (2)

Application Number Title Priority Date Filing Date
ES98119828T Expired - Lifetime ES2209032T3 (es) 1993-03-01 1994-03-01 Aparato para evitar errores de redondeo cuando los coeficientes de transformada que representan una señal de imagen en movimiento se transforman inversamente.
ES10011843T Expired - Lifetime ES2389766T3 (es) 1993-03-01 1994-03-01 Descodificación de un bloque de coeficientes de transformada cuantificados, en donde una paridad par de la suma de los coeficientes de transformada cuantificados inversamente es ajustada a una paridad impar

Family Applications After (2)

Application Number Title Priority Date Filing Date
ES99113786T Expired - Lifetime ES2389797T3 (es) 1993-03-01 1994-03-01 Aparato para evitar errores de redondeo en la transformación inversa de coeficientes de transformada de una señal de imagen en movimiento
ES10011642T Expired - Lifetime ES2389718T3 (es) 1993-03-01 1994-03-01 Descodificación de un bloque de coeficientes de transformada cuantificados, en donde una paridad par de la suma de los coeficientes de transformada cuantificados inversamente es ajustada a una paridad impar

Country Status (28)

Country Link
US (2) US5481553A (es)
EP (5) EP0638218B1 (es)
JP (2) JP3610578B2 (es)
KR (1) KR100287490B1 (es)
CN (1) CN1076935C (es)
AT (2) ATE185663T1 (es)
AU (1) AU673244B2 (es)
BR (1) BR9404321A (es)
CA (1) CA2134444C (es)
DE (2) DE69433272T2 (es)
DK (5) DK0903944T3 (es)
EG (1) EG20330A (es)
ES (5) ES2209032T3 (es)
FI (1) FI112579B (es)
GR (1) GR3032133T3 (es)
HU (1) HU217744B (es)
IL (1) IL108787A (es)
MY (1) MY110794A (es)
NO (2) NO314709B1 (es)
NZ (1) NZ261907A (es)
OA (1) OA10108A (es)
PL (1) PL173287B1 (es)
PT (4) PT903944E (es)
RO (1) RO115926B1 (es)
RU (1) RU2119727C1 (es)
TR (1) TR28436A (es)
TW (1) TW224553B (es)
WO (1) WO1994021083A1 (es)

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