Dolezalova - Optimizing colors for effective visualization of geographic data
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www.geoinformatics.upol.cz OPTIMIZING COLOURS FOR EFFECTIVE VISUALIZATION OF GEOGRAPHIC DATA Jitka Doležalová
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Presentation from Third InDOG Doctoral Conference in Olomouc, Czech Republic. 13. - 16. October 2014
Transcript of Dolezalova - Optimizing colors for effective visualization of geographic data
www.geoinformatics.upol.cz
OPTIMIZING COLOURS FOR EFFECTIVE VISUALIZATION OF GEOGRAPHIC DATA
Jitka Doležalová
www.geoinformatics.upol.cz
COLOUR DISTANCE
• Colour model, colour space• Metric – quantification of the difference
between two colours• Perceptually uniform versus non-uniform
colour model
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sRGB
CIELAB
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EXPERIMENTAL RESULTS
• Two successive phases through a questionnaire and eye-tracking
• What colour distance is optimal? • The distance was measured by CIEDE2000
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www.geoinformatics.upol.cz
COLOUR SCHEMES
• Uniform colour distances between classes
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COLOUR SCHEMES
• Non uniform colour distances between classes
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CONSTRUCTION OF COLOUR SCHEMES
• Intersection of two subspaces• CIE94
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CONSTRUCTION OF COLOUR SCHEMES
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SOFTWARE TOOL• http://ostrubl.shopino.cz/free/barvicky.php
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