Approaches to Uncertainty Visualization
Visualized data often have dubious origins and quality.
Different forms of uncertainty and errors are also introduced
as the data are derived, transformed, interpolated, and finally
In the absence of integrated presentation of data and
the analysis of the visualization is incomplete at best
and often leads to inaccurate or incorrect conclusions.
This paper surveys techniques
for presenting data together with uncertainty.
These uncertainty visualization techniques present data in
such a manner that users are made aware of the locations
and degree of uncertainties in their data so as to make
more informed analyses and decisions.
The techniques include adding glyphs, adding geometry,
modifying geometry, modifying attributes, animation,
sonification, and psycho-visual approaches.
We present our results in uncertainty visualization for
global illumination with radiosity,
We also present a classification of the possibilities in
uncertainty visualization, and locate our contributions
within this classification.
This paper has been accepted for publication in The Visual Computer.
A postscript version of the paper
can be obtained by clicking
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then get /pub/reinas/papers/uncertainty.ps.gz.
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