GB2431810B - Image processing apparatus - Google Patents

Image processing apparatus

Info

Publication number
GB2431810B
GB2431810B GB0624100A GB0624100A GB2431810B GB 2431810 B GB2431810 B GB 2431810B GB 0624100 A GB0624100 A GB 0624100A GB 0624100 A GB0624100 A GB 0624100A GB 2431810 B GB2431810 B GB 2431810B
Authority
GB
United Kingdom
Prior art keywords
processing apparatus
image processing
image
processing
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.)
Active
Application number
GB0624100A
Other versions
GB0624100D0 (en
GB2431810A (en
Inventor
Naoya Oka
Masahiro Nako
Ryo Hasegawa
Rikiya Asaoka
Daisuke Honda
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.)
Hitachi Ltd
Original Assignee
Hitachi 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
Priority claimed from JP2005130737A external-priority patent/JP4617989B2/en
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to GB0624100A priority Critical patent/GB2431810B/en
Publication of GB0624100D0 publication Critical patent/GB0624100D0/en
Publication of GB2431810A publication Critical patent/GB2431810A/en
Application granted granted Critical
Publication of GB2431810B publication Critical patent/GB2431810B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T5/00—Image enhancement or restoration
    • G06T5/90—Dynamic range modification of images or parts thereof
    • G06T5/92—Dynamic range modification of images or parts thereof based on global image properties
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/57—Control of contrast or brightness
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/10—Image acquisition modality
    • G06T2207/10016—Video; Image sequence

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Picture Signal Circuits (AREA)
  • Controls And Circuits For Display Device (AREA)
GB0624100A 2005-04-28 2006-03-06 Image processing apparatus Active GB2431810B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0624100A GB2431810B (en) 2005-04-28 2006-03-06 Image processing apparatus

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2005130737A JP4617989B2 (en) 2005-04-28 2005-04-28 Video processing device
GB0624100A GB2431810B (en) 2005-04-28 2006-03-06 Image processing apparatus
GB0604472A GB2425670B (en) 2005-04-28 2006-03-06 Image processing apparatus

Publications (3)

Publication Number Publication Date
GB0624100D0 GB0624100D0 (en) 2007-01-10
GB2431810A GB2431810A (en) 2007-05-02
GB2431810B true GB2431810B (en) 2007-12-19

Family

ID=37998717

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0624100A Active GB2431810B (en) 2005-04-28 2006-03-06 Image processing apparatus

Country Status (1)

Country Link
GB (1) GB2431810B (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5321513A (en) * 1992-04-06 1994-06-14 Sony Corporation Apparatus for shifting the DC level of a luminance signal based on frequency distribution and rate of modulation
EP1359746A1 (en) * 2001-05-31 2003-11-05 Matsushita Electric Industrial Co., Ltd. Image processing apparatus and image processing method

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5321513A (en) * 1992-04-06 1994-06-14 Sony Corporation Apparatus for shifting the DC level of a luminance signal based on frequency distribution and rate of modulation
EP1359746A1 (en) * 2001-05-31 2003-11-05 Matsushita Electric Industrial Co., Ltd. Image processing apparatus and image processing method

Also Published As

Publication number Publication date
GB0624100D0 (en) 2007-01-10
GB2431810A (en) 2007-05-02

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