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Author, Editor

Author(s):

Havran, Vlastimil
Bittner, Jiri
Seidel, Hans-Peter

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Editor(s):

Joy, Kenneth I.

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Not MPII Editor(s):

Joy, Kenneth I.

BibTeX cite key*:

Havran2003:SCCG

Title, Booktitle

Title*:

Exploiting Temporal Coherence in Ray Casted Walkthroughs

Booktitle*:

Proceedings of the 19th Spring Conference on Computer Graphics 2003 (SCCG 03)

Event, URLs

URL of the conference:


URL for downloading the paper:


Event Address*:

Budmerice, Slovakia

Language:

English

Event Date*
(no longer used):

April, 24 - April, 26

Organization:


Event Start Date:

24 April 2003

Event End Date:

26 April 2003

Publisher

Name*:

ACM

URL:


Address*:

New York, USA

Type:


Vol, No, Year, pp.

Series:


Volume:


Number:


Month:

April

Pages:

164-172

Year*:

2003

VG Wort Pages:

9

ISBN/ISSN:


Sequence Number:


DOI:




Note, Abstract, ©


(LaTeX) Abstract:

We present a technique that aims at exploiting temporal coherence of ray casted walkthroughs. Our goal is to reuse ray/object
intersections computed in the last frame of the walkthrough for
acceleration of ray casting in the current frame. In particular we aim at eliminating the ray traversal and computing only a single ray/object intersection per pixel. If our technique does not succeed in determining visibility, it falls back to the classical ray traversal. Visible point samples from the last frame are reprojected to the current frame. To identify whether these samples can be reused we apply splatting and epipolar geometry constraints. We discuss two additional techniques that handle correct appearance of small objects. We conducted a series of tests on walkthroughs of building interiors. Our method succeeded in determining visibility of more than 78\% of pixels. For these pixels only a single ray/object intersection is executed. The frame rate is increased by up to 47\%. Finally, we
argue that the achieved speedup is relatively significant by comparing the performance of our algorithm to the ``ideal'' ray shooting algorithm.



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Access Level:

Public

Correlation

MPG Unit:

Max-Planck-Institut für Informatik



MPG Subunit:

Computer Graphics Group

Audience:

Expert

Appearance:

MPII WWW Server, MPII FTP Server, MPG publications list, university publications list, working group publication list, Fachbeirat, VG Wort



BibTeX Entry:

@INPROCEEDINGS{Havran2003:SCCG,
AUTHOR = {Havran, Vlastimil and Bittner, Jiri and Seidel, Hans-Peter},
EDITOR = {Joy, Kenneth I.},
TITLE = {Exploiting Temporal Coherence in Ray Casted Walkthroughs},
BOOKTITLE = {Proceedings of the 19th Spring Conference on Computer Graphics 2003 (SCCG 03)},
PUBLISHER = {ACM},
YEAR = {2003},
PAGES = {164--172},
ADDRESS = {Budmerice, Slovakia},
MONTH = {April},
}


Entry last modified by Christine Kiesel, 03/12/2010
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Editor(s)
Vlastimil Havran
Created
04/05/2003 12:51:29 AM
Revisions
7.
6.
5.
4.
3.
Editor(s)
Christine Kiesel
Michael Gösele
Michael Gösele
Vlastimil Havran
Vlastimil Havran
Edit Dates
30.06.2004 14:47:19
01.05.2003 10:20:30
01.05.2003 10:19:48
04/30/2003 03:32:05 PM
09.04.2003 17:36:39
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