Perception and Harmony Guided Color Assignment Optimization for Multi-Charts

Abstract

In order to ensure the visual effect and unity of color mapping of multi-charts among the data with the same category, it is proposed to study the color assignment optimization problems on multi-charts, which introduces a score defined based on perception and harmony to guide the joint color assignment optimization. When given the data plotted with multi-charts and the color palette, first the quality of the color palette is evaluated. If the color palette is of high quality, the proposed method will directly optimize the color assignment. Otherwise, the color palette needs to be optimized first. Several user studies are conducted to show that the proposed method can ensure the unity of multi-charts color mapping and improve the quality of visualization results.