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1. WO1982002310 - IMAGE FILTER

Publication Number WO/1982/002310
Publication Date 08.07.1982
International Application No. PCT/JP1981/000409
International Filing Date 25.12.1981
IPC
H04N 9/78 2006.1
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
9Details of colour television systems
77Circuits for processing the brightness signal and the chrominance signal relative to each other, e.g. adjusting the phase of the brightness signal relative to the colour signal, correcting differential gain or differential phase
78for separating the brightness signal or the chrominance signal from the colour television signal, e.g. using comb filter
CPC
H04N 9/78
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
9Details of colour television systems
77Circuits for processing the brightness signal and the chrominance signal relative to each other, e.g. adjusting the phase of the brightness signal relative to the colour signal, correcting differential gain or differential phase
78for separating the brightness signal or the chrominance signal from the colour television signal, e.g. using comb filter
Applicants
  • SONY CORPORATION [JP]/[JP] (AllExceptUS)
  • TANAKA, Yutaka [JP]/[JP] (UsOnly)
  • OKADA, Takashi [JP]/[JP] (UsOnly)
Inventors
  • TANAKA, Yutaka
  • OKADA, Takashi
Agents
  • ITO, Tei
Priority Data
55/18666427.12.1980JP
Publication Language Japanese (ja)
Filing Language Japanese (JA)
Designated States
Title
(EN) IMAGE FILTER
(FR) FILTRE D'IMAGE
Abstract
(EN) Image filter suited for separating luminance and chrominance signals, particularly for correctly and reliably separating an object image signal from a composite image signal containing a plurality of signals with various information contents. In the image filter, the amplitude-levels of a plurality of adjacent dots (Si, Si+1, ....), (Sj, Sj+1, ......) of an image undergo the filtering processing in the space formed of a plurality of amplitude-level axes. For this purpose, an amplitude correlation device (20) is provided to process an object image signal after discriminating the amplitude and the polarity of the object image signal.
(FR) Filtre d'image permettant la séparation des signaux de luminance et de chrominance, notamment afin de séparer de manière correcte et fiable le signal d'image d'un objet d'un signal d'image composite contenant une pluralité de signaux avec plusieurs contenus d'informations. Dans le filtre d'image, les niveaux d'amplitude d'une pluralité de points adjacents (Si, Si + 1,...), (Sj, Sj + 1,...) d'une image sont soumis au traitement de filtrage dans l'espace formé par une pluralité d'axes de niveaux d'amplitude. Dans ce but, un dispositif de corrélation d'amplitude (20) est prévu de manière à permettre le traitement d'un signal d'image d'un objet après la discrimination de l'amplitude et de la polarité du signal d'image de l'objet.
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