Selecting Semantically‐Resonant Colors for Data Visualization. (1st July 2013)

• Record Type: Journal Article
• Authors: Lin, Sharon; Fortuna, Julie; Kulkarni, Chinmay; Stone, Maureen; Heer, Jeffrey
• Is Part Of: Computer graphics forum. Volume 32:Number 3(2013)Part 4
• Page Start: 401
• Page End: 410
• Publication Date: 2013-07-01
• Subjects: H.5.m [Information Interfaces]: Misc—Color; Computer graphics -- Periodicals; 006.605
• DOI: 10.1111/cgf.12127
• Languages: English
• ISSNs: 0167-7055

Abstract

Abstract: We introduce an algorithm for automatic selection of semantically‐resonant colors to represent data (e.g., using blue for data about "oceans", or pink for "love"). Given a set of categorical values and a target color palette, our algorithm matches each data value with a unique color. Values are mapped to colors by collecting representative images, analyzing image color distributions to determine value‐color affinity scores, and choosing an optimal assignment. Our affinity score balances the probability of a color with how well it discriminates among data values. A controlled study shows that expert‐chosen semantically‐resonant colors improve speed on chart reading tasks compared to a standard palette, and that our algorithm selects colors that lead to similar gains. A second study verifies that our algorithm effectively selects colors across a variety of data categories.