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1. WO1999003282 - VIDEO DATA ENCODER, VIDEO DATA ENCODING METHOD, VIDEO DATA TRANSMITTER, AND VIDEO DATA RECORDING MEDIUM

Publication Number WO/1999/003282
Publication Date 21.01.1999
International Application No. PCT/JP1998/002970
International Filing Date 01.07.1998
IPC
G06T 9/00 2006.1
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
9Image coding
H04N 7/26 2006.1
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
7Television systems
24Systems for the transmission of television signals using pulse code modulation
26using bandwidth reduction
H04N 7/30 2006.1
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
7Television systems
24Systems for the transmission of television signals using pulse code modulation
26using bandwidth reduction
30involving transform coding
H04N 7/36 2006.1
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
7Television systems
24Systems for the transmission of television signals using pulse code modulation
26using bandwidth reduction
32involving predictive coding
36using temporal prediction
H04N 7/50 2006.1
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
7Television systems
24Systems for the transmission of television signals using pulse code modulation
26using bandwidth reduction
50involving transform and predictive coding
CPC
H04N 19/115
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
10using adaptive coding
102characterised by the element, parameter or selection affected or controlled by the adaptive coding
115Selection of the code volume for a coding unit prior to coding
H04N 19/136
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
10using adaptive coding
134characterised by the element, parameter or criterion affecting or controlling the adaptive coding
136Incoming video signal characteristics or properties
H04N 19/14
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
10using adaptive coding
134characterised by the element, parameter or criterion affecting or controlling the adaptive coding
136Incoming video signal characteristics or properties
14Coding unit complexity, e.g. amount of activity or edge presence estimation
H04N 19/146
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
10using adaptive coding
134characterised by the element, parameter or criterion affecting or controlling the adaptive coding
146Data rate or code amount at the encoder output
H04N 19/149
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
10using adaptive coding
134characterised by the element, parameter or criterion affecting or controlling the adaptive coding
146Data rate or code amount at the encoder output
149by estimating the code amount by means of a model, e.g. mathematical model or statistical model
H04N 19/172
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
10using adaptive coding
169characterised 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
17the unit being an image region, e.g. an object
172the region being a picture, frame or field
Applicants
  • SONY CORPORATION [JP]/[JP] (AT, BE, CA, CH, CN, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, JP, KR, LU, MC, MX, NL, PT, SE)
  • MIHARA, Kanji [JP]/[JP] (UsOnly)
Inventors
  • MIHARA, Kanji
Agents
  • KOIKE, Akira
Priority Data
9/18273808.07.1997JP
Publication Language Japanese (ja)
Filing Language Japanese (JA)
Designated States
Title
(EN) VIDEO DATA ENCODER, VIDEO DATA ENCODING METHOD, VIDEO DATA TRANSMITTER, AND VIDEO DATA RECORDING MEDIUM
(FR) CODEUR, PROCEDE DE CODAGE, EMETTEUR ET SUPPORT D'ENREGISTREMENT DE DONNEES VIDEO
Abstract
(EN) An encoding preprocessing section supplies a CPU (6) with a statistic amount (index data) representative of the feature of source video data to be encoded. Based on the statistic amount, the CPU (6) operates the difficulty of encoding video data and then operates a target encoding amount assigned to each picture of the video data based on the difficulty of encoding. The CPU (6) can perform encoding in real time without performing two encoding runs required for conventional two path encoding by feeding forward the operated target encoding amount to an encoder (4). Optimal encoding is realized depending on the pattern of the video data because the target encoding amount is operated depending on the difficulty of encoding the video data.
(FR) Le système décrit comprend une section de codage à prétraitement qui fournit à une UCT (6) une valeur statistique (donnée index) représentative des attributs des données vidéo sources devant être codées. A partir de cette valeur statistique, l'UCT (6) calcule la difficulté de codage des données vidéo puis établit une valeur de codage cible assignée à chaque image de données vidéo en fonction de la difficulté du codage. En fournissant préalablement la valeur cible de codage qui a été déterminée à un codeur (4), l'UCT (6) peut réaliser un codage en temps réel sans recourir au double cycle de codage nécessaire pour le codage à deux voies conventionnel. Ce système permet de réaliser un codage optimal dépendant de la structure des données vidéo parce que la valeur de codage cible est établie en fonction de la difficulté de codage des données vidéo.
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