FR2456443A1 - Dispositif de traitement du detail vertical d'une image video, en vue de son accentuation - Google Patents

Dispositif de traitement du detail vertical d'une image video, en vue de son accentuation

Info

Publication number
FR2456443A1
FR2456443A1 FR8010433A FR8010433A FR2456443A1 FR 2456443 A1 FR2456443 A1 FR 2456443A1 FR 8010433 A FR8010433 A FR 8010433A FR 8010433 A FR8010433 A FR 8010433A FR 2456443 A1 FR2456443 A1 FR 2456443A1
Authority
FR
France
Prior art keywords
vertical detail
frequencies
luminance
processing
video image
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.)
Granted
Application number
FR8010433A
Other languages
English (en)
Other versions
FR2456443B1 (fr
Inventor
Joseph Peter Bingham
William Adamson Lagoni
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.)
RCA Corp
Original Assignee
RCA 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 RCA Corp filed Critical RCA Corp
Publication of FR2456443A1 publication Critical patent/FR2456443A1/fr
Application granted granted Critical
Publication of FR2456443B1 publication Critical patent/FR2456443B1/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/64—Circuits for processing colour signals
    • H04N9/646—Circuits for processing colour signals for image enhancement, e.g. vertical detail restoration, cross-colour elimination, contour correction, chrominance trapping filters

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Processing Of Color Television Signals (AREA)
  • Picture Signal Circuits (AREA)

Abstract

L'INVENTION CONCERNE UN DISPOSITIF DE TRAITEMENT DU DETAIL VERTICAL D'UNE IMAGE VIDEO DANS UN SYSTEME DE TRAITEMENT D'UN SIGNAL VIDEO CONTENANT DES COMPOSANTES DE LUMINANCE ET DE CHROMINANCE EN RELATION DE FREQUENCES IMBRIQUEES. SELON L'INVENTION, UN MOYEN 35 EST RELIE A LA SECONDE SORTIE D'UN FILTRE EN PEIGNE 15 POUR LAISSER SELECTIVEMENT PASSER LES FREQUENCES CORRESPONDANT AU DETAIL VERTICAL, A L'EXCLUSION DE SIGNAUX OCCUPANT LA BANDE DES FREQUENCES DE CHROMINANCE; UN MOYEN A, B TRANSMET LES EXCURSIONS DE FAIBLE AMPLITUDE DU SIGNAL DE DETAIL VERTICAL A UN PREMIER GAIN ET LES EXCURSIONS D'AMPLITUDE MODEREE A UN SECOND GAIN SUPERIEUR AU PREMIER, LE MOYEN DE TRANSMISSION COMPRENANT UN DISPOSITIF DE TRAITEMENT NON LINEAIRE 50 ET UN FILTRE PASSE-BAS 52 SUPPRIMANT LES SIGNAUX OCCUPANT LA BANDE DES FREQUENCES AU-DESSUS DES FREQUENCES DU SIGNAL DE DETAIL VERTICAL; UN MOYEN 30 COMBINE LES SIGNAUX DU MOYEN DE TRANSMISSION AU SIGNAL DE LUMINANCE FILTRE EN PEIGNE POUR PRODUIRE LA COMPOSANTE DE LUMINANCE; ET UN MOYEN 32 D'UTILISATION DE LUMINANCE RECOIT CETTE COMPOSANTE DE LUMINANCE. L'INVENTION S'APPLIQUE NOTAMMENT A LA TELEVISION.
FR8010433A 1979-05-11 1980-05-09 Dispositif de traitement du detail vertical d'une image video, en vue de son accentuation Expired FR2456443B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/038,204 US4223340A (en) 1979-05-11 1979-05-11 Image detail improvement in a vertical detail enhancement system

Publications (2)

Publication Number Publication Date
FR2456443A1 true FR2456443A1 (fr) 1980-12-05
FR2456443B1 FR2456443B1 (fr) 1985-11-08

Family

ID=21898640

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8010433A Expired FR2456443B1 (fr) 1979-05-11 1980-05-09 Dispositif de traitement du detail vertical d'une image video, en vue de son accentuation

Country Status (8)

Country Link
US (1) US4223340A (fr)
JP (1) JPS55153491A (fr)
CA (1) CA1143829A (fr)
DE (1) DE3017932C2 (fr)
FR (1) FR2456443B1 (fr)
GB (1) GB2049349B (fr)
IT (1) IT1151062B (fr)
MY (1) MY8500727A (fr)

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US4245237A (en) * 1979-05-11 1981-01-13 Rca Corporation Controllable non-linear processing of video signals
US4393396A (en) * 1980-08-20 1983-07-12 U.S. Philips Corporation Video signal processing circuit for noise reduction
US4445152A (en) * 1980-09-02 1984-04-24 Karlock James A Video detail enhancing circuit
US4402006A (en) * 1981-02-23 1983-08-30 Karlock James A Image enhancer apparatus
US4365266A (en) * 1981-04-20 1982-12-21 Rca Corporation Horizontal and vertical image detail processing of a color television signal
JPS5896460A (ja) * 1981-12-03 1983-06-08 Sony Corp テレビ受像機
US4916526A (en) * 1986-01-31 1990-04-10 Yves C. Faroudja Bandwidth control for chrominance and luminance paths in quadrature modulated color television system
GB2370933A (en) * 2001-01-09 2002-07-10 Sony Uk Ltd Detecting and reducing visibility of scratches in images.
US7440633B2 (en) * 2003-12-19 2008-10-21 Sharp Laboratories Of America, Inc. Enhancing the quality of decoded quantized images
US7424168B2 (en) * 2003-12-24 2008-09-09 Sharp Laboratories Of America, Inc. Enhancing the quality of decoded quantized images
US7424166B2 (en) * 2003-12-24 2008-09-09 Sharp Laboratories Of America, Inc. Enhancing the quality of decoded quantized images
US7400779B2 (en) * 2004-01-08 2008-07-15 Sharp Laboratories Of America, Inc. Enhancing the quality of decoded quantized images
US7800577B2 (en) * 2004-12-02 2010-09-21 Sharp Laboratories Of America, Inc. Methods and systems for enhancing display characteristics
US7782405B2 (en) * 2004-12-02 2010-08-24 Sharp Laboratories Of America, Inc. Systems and methods for selecting a display source light illumination level
US8913089B2 (en) 2005-06-15 2014-12-16 Sharp Laboratories Of America, Inc. Methods and systems for enhancing display characteristics with frequency-specific gain
US7515160B2 (en) * 2006-07-28 2009-04-07 Sharp Laboratories Of America, Inc. Systems and methods for color preservation with image tone scale corrections
US8111265B2 (en) 2004-12-02 2012-02-07 Sharp Laboratories Of America, Inc. Systems and methods for brightness preservation using a smoothed gain image
US8004511B2 (en) 2004-12-02 2011-08-23 Sharp Laboratories Of America, Inc. Systems and methods for distortion-related source light management
US8120570B2 (en) 2004-12-02 2012-02-21 Sharp Laboratories Of America, Inc. Systems and methods for tone curve generation, selection and application
US7924261B2 (en) 2004-12-02 2011-04-12 Sharp Laboratories Of America, Inc. Methods and systems for determining a display light source adjustment
US9083969B2 (en) * 2005-08-12 2015-07-14 Sharp Laboratories Of America, Inc. Methods and systems for independent view adjustment in multiple-view displays
US8922594B2 (en) 2005-06-15 2014-12-30 Sharp Laboratories Of America, Inc. Methods and systems for enhancing display characteristics with high frequency contrast enhancement
US7982707B2 (en) 2004-12-02 2011-07-19 Sharp Laboratories Of America, Inc. Methods and systems for generating and applying image tone scale adjustments
US7961199B2 (en) * 2004-12-02 2011-06-14 Sharp Laboratories Of America, Inc. Methods and systems for image-specific tone scale adjustment and light-source control
US7768496B2 (en) 2004-12-02 2010-08-03 Sharp Laboratories Of America, Inc. Methods and systems for image tonescale adjustment to compensate for a reduced source light power level
US8947465B2 (en) 2004-12-02 2015-02-03 Sharp Laboratories Of America, Inc. Methods and systems for display-mode-dependent brightness preservation
US7839406B2 (en) 2006-03-08 2010-11-23 Sharp Laboratories Of America, Inc. Methods and systems for enhancing display characteristics with ambient illumination input
US7826681B2 (en) 2007-02-28 2010-11-02 Sharp Laboratories Of America, Inc. Methods and systems for surround-specific display modeling
US8345038B2 (en) 2007-10-30 2013-01-01 Sharp Laboratories Of America, Inc. Methods and systems for backlight modulation and brightness preservation
US8155434B2 (en) 2007-10-30 2012-04-10 Sharp Laboratories Of America, Inc. Methods and systems for image enhancement
US9177509B2 (en) 2007-11-30 2015-11-03 Sharp Laboratories Of America, Inc. Methods and systems for backlight modulation with scene-cut detection
US8378956B2 (en) 2007-11-30 2013-02-19 Sharp Laboratories Of America, Inc. Methods and systems for weighted-error-vector-based source light selection
US8207932B2 (en) 2007-12-26 2012-06-26 Sharp Laboratories Of America, Inc. Methods and systems for display source light illumination level selection
US8223113B2 (en) 2007-12-26 2012-07-17 Sharp Laboratories Of America, Inc. Methods and systems for display source light management with variable delay
US8169431B2 (en) 2007-12-26 2012-05-01 Sharp Laboratories Of America, Inc. Methods and systems for image tonescale design
US8203579B2 (en) * 2007-12-26 2012-06-19 Sharp Laboratories Of America, Inc. Methods and systems for backlight modulation with image characteristic mapping
US8179363B2 (en) 2007-12-26 2012-05-15 Sharp Laboratories Of America, Inc. Methods and systems for display source light management with histogram manipulation
US8531379B2 (en) 2008-04-28 2013-09-10 Sharp Laboratories Of America, Inc. Methods and systems for image compensation for ambient conditions
US8416179B2 (en) 2008-07-10 2013-04-09 Sharp Laboratories Of America, Inc. Methods and systems for color preservation with a color-modulated backlight
US9330630B2 (en) 2008-08-30 2016-05-03 Sharp Laboratories Of America, Inc. Methods and systems for display source light management with rate change control
US8165724B2 (en) 2009-06-17 2012-04-24 Sharp Laboratories Of America, Inc. Methods and systems for power-controlling display devices
US20110074803A1 (en) * 2009-09-29 2011-03-31 Louis Joseph Kerofsky Methods and Systems for Ambient-Illumination-Selective Display Backlight Modification and Image Enhancement
US8761537B2 (en) * 2011-05-27 2014-06-24 Vixs Systems, Inc. Adaptive edge enhancement
CN109978782A (zh) * 2019-03-18 2019-07-05 新疆大学 一种数字全息再现图像中散斑噪声的去除方法及装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3798353A (en) * 1970-10-31 1974-03-19 Fernseh Gmbh Correcting vertical resolution in television color images
GB1465805A (en) * 1974-06-11 1977-03-02 Matsushita Electric Corp Automatic picture sharpness control

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3715477A (en) * 1971-03-11 1973-02-06 Rca Corp Video signal noise-limiting apparatus
US4074321A (en) * 1976-10-12 1978-02-14 The Magnavox Company Circuit for separating chroma and luminance information in a composite video signal
US4096516A (en) * 1977-03-25 1978-06-20 Rca Corporation Electronic signal processing apparatus

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3798353A (en) * 1970-10-31 1974-03-19 Fernseh Gmbh Correcting vertical resolution in television color images
GB1465805A (en) * 1974-06-11 1977-03-02 Matsushita Electric Corp Automatic picture sharpness control

Also Published As

Publication number Publication date
GB2049349B (en) 1983-04-27
IT1151062B (it) 1986-12-17
US4223340A (en) 1980-09-16
MY8500727A (en) 1985-12-31
DE3017932C2 (de) 1983-01-05
JPS55153491A (en) 1980-11-29
DE3017932A1 (de) 1980-11-20
GB2049349A (en) 1980-12-17
IT8021902A0 (it) 1980-05-08
CA1143829A (fr) 1983-03-29
FR2456443B1 (fr) 1985-11-08

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