Bitte benutzen Sie diese Referenz, um auf diese Ressource zu verweisen:
doi:10.22028/D291-26520
Titel: | Variational optic flow on the Sony PlayStation 3 – accurate dense flow fields for real-time applications |
VerfasserIn: | Gwosdek, Pascal Bruhn, Andrés Weickert, Joachim |
Sprache: | Englisch |
Erscheinungsjahr: | 2009 |
DDC-Sachgruppe: | 510 Mathematik |
Dokumenttyp: | Sonstiges |
Abstract: | While modern variational methods for optic flow computation offer dense flow fields and highly accurate results, their computational complexity has prevented their use in many real-time applications. With cheap modern parallel hardware such as the Sony PlayStation 3 new possibilities arise. For a linear and a nonlinear variant of the popular combined local-global (CLG) method, we present specific algorithms that are tailored towards real-time performance. They are based on bidirectional full multigrid methods with a full approximation scheme (FAS) in the nonlinear setting. Their parallelisation on the Cell hardware uses a temporal instead of a spatial decomposition, and processes operations in a vector-based manner. Memory latencies are reduced by a locality-preserving cache management and optimised access patterns. With images of size 316×252 pixels, we obtain dense flow fields for up to 210 frames per second. |
Link zu diesem Datensatz: | urn:nbn:de:bsz:291-scidok-47671 hdl:20.500.11880/26576 http://dx.doi.org/10.22028/D291-26520 |
Schriftenreihe: | Preprint / Fachrichtung Mathematik, Universität des Saarlandes |
Band: | 233 |
Datum des Eintrags: | 6-Jun-2013 |
Fakultät: | MI - Fakultät für Mathematik und Informatik |
Fachrichtung: | MI - Mathematik |
Sammlung: | SciDok - Der Wissenschaftsserver der Universität des Saarlandes |
Dateien zu diesem Datensatz:
Datei | Beschreibung | Größe | Format | |
---|---|---|---|---|
preprint_233_09.pdf | 1,29 MB | Adobe PDF | Öffnen/Anzeigen |
Alle Ressourcen in diesem Repository sind urheberrechtlich geschützt.