Color Calculator Xiaoyan Song Feb.21,2003.

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Presentation transcript:

Color Calculator Xiaoyan Song Feb.21,2003

Xiaoyan Song2 Outline w Motivation w Project Overview w Background w Flowchart, GUI, Features

Feb.21,2003Xiaoyan Song3 Motivation w Present a handy tool for color calculation w A tool for color science short-course education

Feb.21,2003Xiaoyan Song4 Project Overview w CIE Standard Demo Illuminants A and D65 Observer (1931 and 1964) w Color Matching Function w Color Spaces Transformation w Color Difference Calculation

Feb.21,2003Xiaoyan Song5 Background w CIE Commission Internationale DE ’ECLARAGE International Commission on Illumination w CIE Standard (Illuminants, Observer) w Tristimulus Calculation w Color Space w Color Difference

Feb.21,2003Xiaoyan Song6 Standard Illuminant w Light defined by a relative spectral power distribution

Feb.21,2003Xiaoyan Song7 Standard Observer

Feb.21,2003Xiaoyan Song8 Calculating Tristimulus

Feb.21,2003Xiaoyan Song9 Color Space w It is used for color specification XYZ Chromaticity 1976 L*a*b*

Feb.21,2003Xiaoyan Song10 Color Difference Delta E*ab Delta E*94 Delta E*00

Feb.21,2003Xiaoyan Song11

Feb.21,2003Xiaoyan Song12 Flowchart Color Calculator Database User’s Input Data Calculation Result Graphic Output

Feb.21,2003Xiaoyan Song13 GUI

Feb.21,2003Xiaoyan Song14 Features I: w 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

Feb.21,2003Xiaoyan Song15 Feature II: w Introduce new improvements in Color Difference Calculation CIELAB CIE94 CIE2000 (new)

Feb.21,2003Xiaoyan Song16 Feature III: Visualization w Visualization Standard Observer Standard Illuminant Reflectance w Flexible results output Data.txt file Various image file (jpg,bmp,png,gif,tiff,…)

Feb.21,2003Xiaoyan Song17 Future Work w Computer platforms compatibility

Feb.21,2003Xiaoyan Song18 Thanks !