ES2199076B1 - Circuito de adaptacion de luminancia basado en interacciones locales. - Google Patents

Circuito de adaptacion de luminancia basado en interacciones locales.

Info

Publication number
ES2199076B1
ES2199076B1 ES200201703A ES200201703A ES2199076B1 ES 2199076 B1 ES2199076 B1 ES 2199076B1 ES 200201703 A ES200201703 A ES 200201703A ES 200201703 A ES200201703 A ES 200201703A ES 2199076 B1 ES2199076 B1 ES 2199076B1
Authority
ES
Spain
Prior art keywords
interactions
adaptation
circuit
local
local 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.)
Expired - Fee Related
Application number
ES200201703A
Other languages
English (en)
Other versions
ES2199076A1 (es
Inventor
Matthias Sven Keil
Gabriel Cristobal Perez
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 Científicas
Original Assignee
Consejo Superior de Investigaciones Científicas
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 Científicas filed Critical Consejo Superior de Investigaciones Científicas
Priority to ES200201703A priority Critical patent/ES2199076B1/es
Priority to AU2003250253A priority patent/AU2003250253A1/en
Priority to PCT/ES2003/000366 priority patent/WO2004010378A1/es
Publication of ES2199076A1 publication Critical patent/ES2199076A1/es
Application granted granted Critical
Publication of ES2199076B1 publication Critical patent/ES2199076B1/es
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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 OR CALCULATING; 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 OR CALCULATING; 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 OR CALCULATING; 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 OR CALCULATING; 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 OR CALCULATING; 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)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Processing Of Color Television Signals (AREA)
  • Image Analysis (AREA)

Abstract

Circuito de adaptación de luminancia basado en interacciones locales. El sistema propuesto está basado en un autómata celular. Su funcionamiento consiste esencialmente en un conjunto de ecuaciones diferenciales. Las ecuaciones están acopladas exclusivamente por medio de interacciones entre los elementos vecinos, es decir, cada célula intercambia información exclusivamente con los cuatro vecinos más próximos. Debido a su naturaleza local, el sistema es susceptible de ser implementado en VLSI, y utilizado por una amplia gama de circuitos en donde sea precisa una normalización de la señal de entrada en una etapa de procesado posterior, que tenga un rango dinámico de niveles de luminosidad restringido.
ES200201703A 2002-07-19 2002-07-19 Circuito de adaptacion de luminancia basado en interacciones locales. Expired - Fee Related ES2199076B1 (es)

Priority Applications (3)

Application Number Priority Date Filing Date Title
ES200201703A ES2199076B1 (es) 2002-07-19 2002-07-19 Circuito de adaptacion de luminancia basado en interacciones locales.
AU2003250253A AU2003250253A1 (en) 2002-07-19 2003-07-15 Luminance-matching circuit based on local interactions
PCT/ES2003/000366 WO2004010378A1 (es) 2002-07-19 2003-07-15 Circuito de adaptación de luminancia basado en interacciones locales

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES200201703A ES2199076B1 (es) 2002-07-19 2002-07-19 Circuito de adaptacion de luminancia basado en interacciones locales.

Publications (2)

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

Family

ID=30470581

Family Applications (1)

Application Number Title Priority Date Filing Date
ES200201703A Expired - Fee Related ES2199076B1 (es) 2002-07-19 2002-07-19 Circuito de adaptacion de luminancia basado en interacciones locales.

Country Status (3)

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

Citations (5)

* 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
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 (4)

* 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 (ja) * 1997-03-18 1999-09-20 松下電器産業株式会社 撮像装置の階調補正装置及び階調補正方法
JP2866935B2 (ja) * 1997-04-18 1999-03-08 工業技術院長 カラー画像の画質改善方法及びその装置
WO2000063838A1 (en) * 1999-04-16 2000-10-26 Izahi Corporation Automatic black level, luminosity and color compensation for digital still images and digital video

Patent Citations (5)

* 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
WO2001026054A2 (en) * 1999-10-01 2001-04-12 Microsoft Corporation Locally adapted histogram equalization

Also Published As

Publication number Publication date
ES2199076A1 (es) 2004-02-01
AU2003250253A1 (en) 2004-02-09
WO2004010378A1 (es) 2004-01-29

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