ES2199076A1 - Luminance-matching circuit based on local interactions - Google Patents

Luminance-matching circuit based on local interactions

Info

Publication number
ES2199076A1
ES2199076A1 ES200201703A ES200201703A ES2199076A1 ES 2199076 A1 ES2199076 A1 ES 2199076A1 ES 200201703 A ES200201703 A ES 200201703A ES 200201703 A ES200201703 A ES 200201703A ES 2199076 A1 ES2199076 A1 ES 2199076A1
Authority
ES
Spain
Prior art keywords
luminance
matching circuit
circuit based
local interactions
interactions
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
ES200201703A
Other languages
Spanish (es)
Other versions
ES2199076B1 (en
Inventor
Matthias Sven Keil
Perez Gabriel Cristobal
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.)
Consejo Superior de Investigaciones Cientificas CSIC
Original Assignee
Consejo Superior de Investigaciones Cientificas CSIC
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 Consejo Superior de Investigaciones Cientificas CSIC filed Critical Consejo Superior de Investigaciones Cientificas CSIC
Priority to ES200201703A priority Critical patent/ES2199076B1/en
Priority to AU2003250253A priority patent/AU2003250253A1/en
Priority to PCT/ES2003/000366 priority patent/WO2004010378A1/en
Publication of ES2199076A1 publication Critical patent/ES2199076A1/en
Application granted granted Critical
Publication of ES2199076B1 publication Critical patent/ES2199076B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • G06T5/94—Dynamic range modification of images or parts thereof based on local image properties, e.g. for local contrast enhancement
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T5/00—Image enhancement or restoration
    • G06T5/20—Image enhancement or restoration using local operators
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T5/00—Image enhancement or restoration
    • G06T5/60—Image enhancement or restoration using machine learning, e.g. neural networks
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00—Arrangements for image or video recognition or understanding
    • G06V10/20—Image preprocessing
    • G06V10/36—Applying a local operator, i.e. means to operate on image points situated in the vicinity of a given point; Non-linear local filtering operations, e.g. median filtering
    • 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
    • G06T2207/20—Special algorithmic details
    • G06T2207/20004—Adaptive image processing
    • G06T2207/20012—Locally adaptive
    • 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
    • G06T2207/20—Special algorithmic details
    • G06T2207/20084—Artificial neural networks [ANN]

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Nonlinear Science (AREA)
  • Multimedia (AREA)
  • Processing Of Color Television Signals (AREA)
  • Image Analysis (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)

Abstract

The invention relates to a luminance-matching system based on a cellular automaton, which essentially operates using a set of differential equations. Said equations are coupled exclusively by means of interactions between neighbouring elements, i.e. each cell exchanges information exclusively with its four closest neighbours. Owing to the local nature of the system, it can be implemented in VLSI with a restricted dynamic range of luminosity levels and used by a wide range of circuits in which the input signal must be normalised during a subsequent processing step.
ES200201703A 2002-07-19 2002-07-19 CIRCUIT OF ADAPTATION OF LUMINANCE BASED ON LOCAL INTERACTIONS. Expired - Fee Related ES2199076B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
ES200201703A ES2199076B1 (en) 2002-07-19 2002-07-19 CIRCUIT OF ADAPTATION OF LUMINANCE BASED ON LOCAL INTERACTIONS.
AU2003250253A AU2003250253A1 (en) 2002-07-19 2003-07-15 Luminance-matching circuit based on local interactions
PCT/ES2003/000366 WO2004010378A1 (en) 2002-07-19 2003-07-15 Luminance-matching circuit based on local interactions

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES200201703A ES2199076B1 (en) 2002-07-19 2002-07-19 CIRCUIT OF ADAPTATION OF LUMINANCE BASED ON LOCAL INTERACTIONS.

Publications (2)

Publication Number Publication Date
ES2199076A1 true ES2199076A1 (en) 2004-02-01
ES2199076B1 ES2199076B1 (en) 2005-06-16

Family

ID=30470581

Family Applications (1)

Application Number Title Priority Date Filing Date
ES200201703A Expired - Fee Related ES2199076B1 (en) 2002-07-19 2002-07-19 CIRCUIT OF ADAPTATION OF LUMINANCE BASED ON LOCAL INTERACTIONS.

Country Status (3)

Country Link
AU (1) AU2003250253A1 (en)
ES (1) ES2199076B1 (en)
WO (1) WO2004010378A1 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5140670A (en) * 1989-10-05 1992-08-18 Regents Of The University Of California Cellular neural network
EP0702482A2 (en) * 1994-09-15 1996-03-20 Xerox Corporation Error diffusion halftoning with homogeneous response in high/low intensity image regions
US5717834A (en) * 1993-08-26 1998-02-10 Werblin; Frank S. CNN programamble topographic sensory device
JPH10293841A (en) * 1997-04-18 1998-11-04 Agency Of Ind Science & Technol Method and device for improving quality of color image
US5936684A (en) * 1996-10-29 1999-08-10 Seiko Epson Corporation Image processing method and image processing apparatus
WO2001026054A2 (en) * 1999-10-01 2001-04-12 Microsoft Corporation Locally adapted histogram equalization

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5182657A (en) * 1989-04-27 1993-01-26 Casio Computer Co., Ltd. Image processing apparatus including binary data producing unit
JP2951910B2 (en) * 1997-03-18 1999-09-20 松下電器産業株式会社 Gradation correction device and gradation correction method for imaging device
AU4082400A (en) * 1999-04-16 2000-11-02 Izahi Corporation Automatic black level, luminosity and color compensation for digital still images and digital video

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5140670A (en) * 1989-10-05 1992-08-18 Regents Of The University Of California Cellular neural network
US5717834A (en) * 1993-08-26 1998-02-10 Werblin; Frank S. CNN programamble topographic sensory device
EP0702482A2 (en) * 1994-09-15 1996-03-20 Xerox Corporation Error diffusion halftoning with homogeneous response in high/low intensity image regions
US5936684A (en) * 1996-10-29 1999-08-10 Seiko Epson Corporation Image processing method and image processing apparatus
JPH10293841A (en) * 1997-04-18 1998-11-04 Agency Of Ind Science & Technol Method and device for improving quality of color image
WO2001026054A2 (en) * 1999-10-01 2001-04-12 Microsoft Corporation Locally adapted histogram equalization

Also Published As

Publication number Publication date
AU2003250253A1 (en) 2004-02-09
ES2199076B1 (en) 2005-06-16
WO2004010378A1 (en) 2004-01-29

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