loading
Documents

Research.Publish.Connect.

Paper

Paper Unlock

Author: Veronica Sundstedt

Affiliation: Bristol University, United Kingdom

ISBN: 978-989-8111-20-3

Keyword(s): Perception, user studies, attention, selective rendering, inattentional blindness, importance maps.

Related Ontology Subjects/Areas/Topics: Computer Vision, Visualization and Computer Graphics ; Lighting and Appearance ; Rendering ; Rendering Algorithms

Abstract: High-fidelity rendering of complex scenes at interactive rates is one of the primary goals of computer graphics. Since high-fidelity rendering is computationally expensive, perceptual strategies such as visual attention have been explored to achieve this goal. Inattentional Blindness (IB) experiments have shown that observers conducting a task can fail to see an object, although it is located within the foveal region (2◦). However, previous attention based algorithms assumed that IB would be restricted to the area outside the foveal region, selectively rendering the areas around task-related objects in high quality and the surrounding areas in lower quality. This paper describes a psychophysical forced-choice preference experiment assessing if participants, performing a task or free-viewing animations, would fail to notice rendering quality degradation within the foveal region. The effect of prior knowledge on the level of perceived quality is also studied. The study involves 64 parti cipants in four conditions: performing a task, or free-viewing a scene, while being naive or informed about assessing rendering quality. Our results show that participants fail to notice the additional reduction in quality, decreasing the overall computation 13 times. There was also a significant difference in the results if free-viewing participants were informed. (More)

PDF ImageFull Text

Download
Sign In Guest: Register as new SciTePress user now for free.

Sign In SciTePress user: please login.

PDF ImageMy Papers

You are not signed in, therefore limits apply to your IP address 34.229.151.87

In the current month:
Recent papers: 100 available of 100 total
2+ years older papers: 200 available of 200 total

Paper citation in several formats:
Sundstedt V. and (2008). A PSYCHOPHYSICAL STUDY OF FOVEAL GRADIENT BASED SELECTIVE RENDERING.In Proceedings of the Third International Conference on Computer Graphics Theory and Applications - Volume 1: GRAPP, (VISIGRAPP 2008) ISBN 978-989-8111-20-3, pages 207-214. DOI: 10.5220/0001097402070214

@conference{grapp08,
author={Veronica Sundstedt},
title={A PSYCHOPHYSICAL STUDY OF FOVEAL GRADIENT BASED SELECTIVE RENDERING},
booktitle={Proceedings of the Third International Conference on Computer Graphics Theory and Applications - Volume 1: GRAPP, (VISIGRAPP 2008)},
year={2008},
pages={207-214},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0001097402070214},
isbn={978-989-8111-20-3},
}

TY - CONF

JO - Proceedings of the Third International Conference on Computer Graphics Theory and Applications - Volume 1: GRAPP, (VISIGRAPP 2008)
TI - A PSYCHOPHYSICAL STUDY OF FOVEAL GRADIENT BASED SELECTIVE RENDERING
SN - 978-989-8111-20-3
AU - Sundstedt, V.
PY - 2008
SP - 207
EP - 214
DO - 10.5220/0001097402070214

Login or register to post comments.

Comments on this Paper: Be the first to review this paper.