BR0203414A - Sistemas e métodos para determinação de espectros usando algoritmos dinâmicos de karhunen-loeve com medição a partir de um diodo emissor de luz de captação de cor - Google Patents

Sistemas e métodos para determinação de espectros usando algoritmos dinâmicos de karhunen-loeve com medição a partir de um diodo emissor de luz de captação de cor

Info

Publication number
BR0203414A
BR0203414A BR0203414-0A BR0203414A BR0203414A BR 0203414 A BR0203414 A BR 0203414A BR 0203414 A BR0203414 A BR 0203414A BR 0203414 A BR0203414 A BR 0203414A
Authority
BR
Brazil
Prior art keywords
loeve
karhunen
color
measurement
systems
Prior art date
Application number
BR0203414-0A
Other languages
English (en)
Inventor
Lalit K Mestha
Sohail A Dianat
Original Assignee
Xerox 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 Xerox Corp filed Critical Xerox Corp
Publication of BR0203414A publication Critical patent/BR0203414A/pt

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/46—Measurement of colour; Colour measuring devices, e.g. colorimeters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/46—Measurement of colour; Colour measuring devices, e.g. colorimeters
    • G01J3/462—Computing operations in or between colour spaces; Colour management systems
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/46—Measurement of colour; Colour measuring devices, e.g. colorimeters
    • G01J3/52—Measurement of colour; Colour measuring devices, e.g. colorimeters using colour charts
    • G01J3/524—Calibration of colorimeters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/46—Measurement of colour; Colour measuring devices, e.g. colorimeters
    • G01J2003/467—Colour computing
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/46—Measurement of colour; Colour measuring devices, e.g. colorimeters
    • G01J3/50—Measurement of colour; Colour measuring devices, e.g. colorimeters using electric radiation detectors
    • G01J3/501—Colorimeters using spectrally-selective light sources, e.g. LEDs

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Spectrometry And Color Measurement (AREA)

Abstract

"SISTEMAS E MéTODOS PARA DETERMINAçãO DE ESPECTROS USANDO ALGORITMOS DINâMICOS DE KARHUNEN-LOEVE COM MEDIçãO A PARTIR DE UM DIODO EMISSOR DE LUZ DE CAPTAçãO DE COR". A presente invenção refere-se a um espectrofotómetro com base em diodos de emissão de luz (LEDS) que usa um algoritmo de reconstrução, com base em características espectrais de fonte de iluminação e sistema de percepção de cor, para converter medições de iluminação múltiplas integradas a partir de um sensor de cor de iluminação não completamente repleto em uma curva espectral completamente repleta usando uma base de dados de referência. A base de dados de referência contém amostras de treino que indicam os espectros de refletância e suas saídas dos sensores de emissão de luz (LEDS) correspondentes. Um dinâmico, algoritmo de reconstrução espectral com base em Karhunen-Loeve, usado para reconstruir espectros, proporciona grande importância para os dados a partir das amostras de treino na vizinhança das amostras de cores em medição. Isto é realizado ao se usar operadores lineares e vetores bases.
BR0203414-0A 2001-08-30 2002-08-28 Sistemas e métodos para determinação de espectros usando algoritmos dinâmicos de karhunen-loeve com medição a partir de um diodo emissor de luz de captação de cor BR0203414A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US09/941,774 US6584435B2 (en) 2001-08-30 2001-08-30 Systems and methods for determining spectra using dynamic karhunen-loeve algorithms with measurements from led color sensor

Publications (1)

Publication Number Publication Date
BR0203414A true BR0203414A (pt) 2003-05-27

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
BR0203414-0A BR0203414A (pt) 2001-08-30 2002-08-28 Sistemas e métodos para determinação de espectros usando algoritmos dinâmicos de karhunen-loeve com medição a partir de um diodo emissor de luz de captação de cor

Country Status (4)

Country Link
US (1) US6584435B2 (pt)
EP (1) EP1291628B1 (pt)
BR (1) BR0203414A (pt)
DE (1) DE60223117T2 (pt)

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Also Published As

Publication number Publication date
EP1291628A3 (en) 2004-10-27
DE60223117D1 (de) 2007-12-06
DE60223117T2 (de) 2008-02-07
EP1291628A2 (en) 2003-03-12
US20030050768A1 (en) 2003-03-13
EP1291628B1 (en) 2007-10-24
US6584435B2 (en) 2003-06-24

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Legal Events

Date Code Title Description
B06A Patent application procedure suspended [chapter 6.1 patent gazette]
B09A Decision: intention to grant [chapter 9.1 patent gazette]
B11D Dismissal acc. art. 38, par 2 of ipl - failure to pay fee after grant in time