CZ354098A3 - Jednotka pro zpracování histogramu video signálů - Google Patents

Jednotka pro zpracování histogramu video signálů

Info

Publication number
CZ354098A3
CZ354098A3 CZ983540A CZ354098A CZ354098A3 CZ 354098 A3 CZ354098 A3 CZ 354098A3 CZ 983540 A CZ983540 A CZ 983540A CZ 354098 A CZ354098 A CZ 354098A CZ 354098 A3 CZ354098 A3 CZ 354098A3
Authority
CZ
Czechia
Prior art keywords
unit
video signals
processing histogram
histogram
processing
Prior art date
Application number
CZ983540A
Other languages
English (en)
Other versions
CZ294351B6 (cs
Inventor
Masahiro Takeshima
Atsuhisa Kageyama
Minoru Kawabata
Hiroko Sugimoto
Original Assignee
Matsushita Electric Industrial Co., Ltd.
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 Matsushita Electric Industrial Co., Ltd. filed Critical Matsushita Electric Industrial Co., Ltd.
Publication of CZ354098A3 publication Critical patent/CZ354098A3/cs
Publication of CZ294351B6 publication Critical patent/CZ294351B6/cs

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/14—Picture signal circuitry for video frequency region
    • H04N5/20—Circuitry for controlling amplitude response
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T5/00—Image enhancement or restoration
    • G06T5/40—Image enhancement or restoration using histogram techniques

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Picture Signal Circuits (AREA)
  • Studio Devices (AREA)
CZ19983540A 1997-03-06 1998-03-05 Jednotka pro korekci histogramu video signálu CZ294351B6 (cs)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5133897 1997-03-06

Publications (2)

Publication Number Publication Date
CZ354098A3 true CZ354098A3 (cs) 1999-04-14
CZ294351B6 CZ294351B6 (cs) 2004-12-15

Family

ID=12884147

Family Applications (1)

Application Number Title Priority Date Filing Date
CZ19983540A CZ294351B6 (cs) 1997-03-06 1998-03-05 Jednotka pro korekci histogramu video signálu

Country Status (10)

Country Link
US (1) US6038341A (cs)
EP (1) EP0940034B1 (cs)
JP (1) JP4027433B2 (cs)
KR (1) KR100346079B1 (cs)
CN (1) CN1113525C (cs)
BR (1) BR9805933A (cs)
CZ (1) CZ294351B6 (cs)
DE (1) DE69834624T2 (cs)
MY (1) MY118613A (cs)
WO (1) WO1998039913A1 (cs)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6185327B1 (en) * 1998-05-04 2001-02-06 Eastman Kodak Company Method and system for the reduction of memory capacity required for a digital representation of an image
EP1075140A1 (en) * 1999-08-02 2001-02-07 Koninklijke Philips Electronics N.V. Video signal enhancement
EP1164784A1 (en) * 2000-06-13 2001-12-19 Koninklijke Philips Electronics N.V. Preventing doming phenomena
US7299248B2 (en) * 2004-06-29 2007-11-20 International Business Machines Corporation Method, system, program for determining frequency of updating database histograms
US8131108B2 (en) * 2005-04-22 2012-03-06 Broadcom Corporation Method and system for dynamic contrast stretch
US8698961B2 (en) * 2010-05-21 2014-04-15 Vixs Systems, Inc. Enhanced histogram equalization
US8599318B2 (en) * 2010-05-21 2013-12-03 Vixs Systems, Inc. Contrast control device and method therefor
JP6469448B2 (ja) * 2015-01-06 2019-02-13 オリンパス株式会社 画像処理装置、撮像装置、画像処理方法、および記録媒体

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0467275A (ja) * 1990-07-06 1992-03-03 Matsushita Electric Ind Co Ltd 認識方法及び認識装置
JPH04271669A (ja) * 1991-02-27 1992-09-28 Matsushita Electric Ind Co Ltd 階調補正装置
JPH0799862B2 (ja) * 1991-03-22 1995-10-25 松下電器産業株式会社 階調補正装置
US5289282A (en) * 1991-05-28 1994-02-22 Matsushita Electric Industrial Co., Ltd. Video signal gradation corrector
JP3019479B2 (ja) * 1991-06-28 2000-03-13 松下電器産業株式会社 階調補正装置
JPH0566751A (ja) * 1991-09-10 1993-03-19 Matsushita Electric Ind Co Ltd 階調補正回路
JP3016652B2 (ja) * 1992-02-07 2000-03-06 松下電器産業株式会社 ゲインコントロール回路
JP3014252B2 (ja) * 1993-09-16 2000-02-28 富士通株式会社 画像処理方法および画像処理装置

Also Published As

Publication number Publication date
CN1113525C (zh) 2003-07-02
KR20000065210A (ko) 2000-11-06
JP2000513905A (ja) 2000-10-17
BR9805933A (pt) 1999-08-31
DE69834624T2 (de) 2006-10-26
JP4027433B2 (ja) 2007-12-26
EP0940034A1 (en) 1999-09-08
DE69834624D1 (de) 2006-06-29
EP0940034B1 (en) 2006-05-24
CN1216194A (zh) 1999-05-05
WO1998039913A1 (en) 1998-09-11
MY118613A (en) 2004-12-31
CZ294351B6 (cs) 2004-12-15
KR100346079B1 (ko) 2002-09-18
US6038341A (en) 2000-03-14

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Legal Events

Date Code Title Description
PD00 Pending as of 2000-06-30 in czech republic
MM4A Patent lapsed due to non-payment of fee

Effective date: 20100305