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Somewhere Over the Rainbow: An Empirical Assessment of Quantitative Colormaps

Published: 21 April 2018 Publication History

Abstract

An essential goal of quantitative color encoding is the accurate mapping of perceptual dimensions of color to the logical structure of data. Prior research identifies weaknesses of 'rainbow' colormaps and advocates for ramping in luminance, while recent work contributes multi-hue colormaps generated using perceptually-uniform color models. We contribute a comparative analysis of different colormap types, with a focus on comparing single- and multi-hue schemes. We present a suite of experiments in which subjects perform relative distance judgments among color triplets drawn systematically from each of four single-hue and five multi-hue colormaps. We characterize speed and accuracy across each colormap, and identify conditions that degrade performance. We also find that a combination of perceptual color space and color naming measures more accurately predict user performance than either alone, though the overall accuracy is poor. Based on these results, we distill recommendations on how to design more effective color encodings for scalar data.

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    cover image ACM Conferences
    CHI '18: Proceedings of the 2018 CHI Conference on Human Factors in Computing Systems
    April 2018
    8489 pages
    ISBN:9781450356206
    DOI:10.1145/3173574
    Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than the author(s) must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected].

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    Publication History

    Published: 21 April 2018

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    Author Tags

    1. color models
    2. colormaps
    3. graphical perception
    4. lab study.
    5. quantitative methods
    6. visualization

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    • Paul G. Allen Family Foundation

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    CHI '18 Paper Acceptance Rate 666 of 2,590 submissions, 26%;
    Overall Acceptance Rate 6,199 of 26,314 submissions, 24%

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    • (2024)Cieran: Designing Sequential Colormaps via In-Situ Active Preference LearningProceedings of the 2024 CHI Conference on Human Factors in Computing Systems10.1145/3613904.3642903(1-15)Online publication date: 11-May-2024
    • (2024)Comparison of Spatial Visualization Techniques for Radiation in Augmented RealityProceedings of the 2024 CHI Conference on Human Factors in Computing Systems10.1145/3613904.3642646(1-15)Online publication date: 11-May-2024
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