Toward Evaluating Progressive Rendering Methods in Appearance Design Tasks
IEEE Computer Graphics and Applications (accepted for publication)
|Random path tracing
||Quasi-random path tracing
||Progressive photon mapping
||Virtual point lights
Example images generated by the algorithms compared in our study.
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Progressive rendering is becoming a popular alternative to precomputation
approaches for appearance design tasks. Images created
by different progressive algorithms exhibit various kinds of visual
artifacts at the early stages of computation. We present a user
study that investigates the effects of these artifacts on user performance
in appearance design tasks. Specifically, we ask both novice
and expert subjects to perform lighting and material editing tasks
with the following algorithms: random path tracing, quasi-random
path tracing, progressive photon mapping, and virtual point light
(VPL) rendering. The experimental result suggests that path tracing
is strongly preferred to progressive photon mapping and VPL
rendering by both experts and novices. There is no indication that
quasi-random path tracing is systematically preferred to random
path tracing or vice-versa; the same holds between progressive photon
mapping and VPL rendering. Interestingly, we did not observe
any significant difference in user workflow for the different algorithms.
Jiawei Ou, Ondřej Karlík, Jaroslav Křivánek, and Fabio Pellacini.
Toward Evaluating Progressive Rendering Methods in Appearance Design Tasks.
IEEE Computer Graphics and Applications (accepted for publication) ...
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