dolezalova - optimizing colors for effective visualization of geographic data
Post on 15-Dec-2014
30 Views
Preview:
DESCRIPTION
TRANSCRIPT
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
www.geoinformatics.upol.cz
sRGB
CIELAB
www.geoinformatics.upol.cz
EXPERIMENTAL RESULTS
• Two successive phases through a questionnaire and eye-tracking
• What colour distance is optimal? • The distance was measured by CIEDE2000
www.geoinformatics.upol.cz
www.geoinformatics.upol.cz
COLOUR SCHEMES
• Uniform colour distances between classes
www.geoinformatics.upol.cz
COLOUR SCHEMES
• Non uniform colour distances between classes
www.geoinformatics.upol.cz
CONSTRUCTION OF COLOUR SCHEMES
• Intersection of two subspaces• CIE94
www.geoinformatics.upol.cz
CONSTRUCTION OF COLOUR SCHEMES
www.geoinformatics.upol.cz
SOFTWARE TOOL• http://ostrubl.shopino.cz/free/barvicky.php
www.geoinformatics.upol.cz
top related