See what you know: analyzing data distribution to improve density map visualization

Authors:
Enrico Bertini;Alessio Di Girolamo;Giuseppe Santucci
Affiliations:
Dipartimento di Informatica e Sistemistica, Università di Roma "La Sapienza" and Department of Informatics, University of Fribourg, Switzerland;Dipartimento di Informatica e Sistemistica, Università di Roma "La Sapienza";Dipartimento di Informatica e Sistemistica, Università di Roma "La Sapienza"
Venue:
EUROVIS'07 Proceedings of the 9th Joint Eurographics / IEEE VGTC conference on Visualization
Year:
2007

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Abstract

Density maps allow for visually rendering density differences, usually mapping density values to a grey or color scale. The paper analyzes the drawbacks arising from the commonly used strategies and introduces a novel technique able to improve the overall mapping process. The technique is driven by statistical knowledge about the density distribution and a set of quality metrics allows for validating, in an objective way, its effectiveness.