Color%20Calculator

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Color Calculator

• Xiaoyan Song
• xas2911_at_cis.rit.edu
• Feb.21,2003

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Outline

• Motivation
• Project Overview
• Background
• Flowchart, GUI, Features

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Motivation

• Present a handy tool for color calculation
• A tool for color science short-course education

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Project Overview

• CIE Standard Demo
• Illuminants A and D65
• Observer (1931 and 1964)
• Color Matching Function
• Color Spaces Transformation
• Color Difference Calculation

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Background

• CIE
• Commission Internationale DE ECLARAGE
• International Commission on Illumination
• CIE Standard (Illuminants, Observer)
• Tristimulus Calculation
• Color Space
• Color Difference

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Standard Illuminant

• Light defined by a relative spectral power
  distribution

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Standard Observer
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Calculating Tristimulus
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Color Space

• It is used for color specification
• XYZ
• Chromaticity
• 1976 Lab

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Color Difference
Delta Eab Delta E94 Delta E00
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(No Transcript)
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Flowchart
Database
Users Input Data
Color Calculator
Color Calculator
Graphic Output
Calculation Result
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GUI
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Features I

• Flexible Options for CMF
• Illuminant A OR Illuminant D65
• 2 Degree OR 10 Degree Observer
• Wavelength ranges and interval
• Calculation Methods
• CIE traditional method
• ASTM 308
• Luminance Unit

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Feature II

• Introduce new improvements in Color Difference
  Calculation
• CIELAB
• CIE94
• CIE2000 (new)

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Feature III Visualization

• Visualization
• Standard Observer
• Standard Illuminant
• Reflectance
• Flexible results output
• Data .txt file
• Various image file (jpg,bmp,png,gif,tiff,)

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Future Work

• Computer platforms compatibility

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Thanks !