Logo des Repositoriums
 
Zeitschriftenartikel

Acceleration of Optical Flow Computations on Tightly-Coupled Processor Arrays

Lade...
Vorschaubild

Volltext URI

Dokumententyp

Text/Journal Article

Zusatzinformation

Datum

2013

Zeitschriftentitel

ISSN der Zeitschrift

Bandtitel

Verlag

Gesellschaft für Informatik e.V., Fachgruppe PARS

Zusammenfassung

Optical flow is widely used in many applications of portable mobile de- vices and automotive embedded systems for the determination of motion of objects in a visual scene. Also in roboticsit is used for motion detection, object segmentation, time-to-contact information, focus of expansion calculations, robot navigation, and automatic parking for vehicles. Similar to many other image processing algorithms, optical flow processes pixel operations repeatedly over whole image frames. Thusit provides a high degree of fine-grained parallelism which can be efficiently exploited on massively parallel processor arrays. In this contextwe propose to accelerate the computation of complex motion estimation vectors on programmable tightly-coupled processor arrays, which offer a high flexibility enabled by coarse-grained reconfiguration capabilities. Novel is also that the degree of parallelism may be adapted to the number of processors that are available to the application. Finallywe present an implementation that is 18 times faster when compared to (a) an FPGA-based soft processor implementationand (b) may be adapted regarding different QoS requirements, hence, being more flexible than a dedicated hardware implementation.

Beschreibung

Sousa, Éricles Rodrigues; Tanase, Alexandru; Lari, Vahid; Hannig, Frank; Teich, Jürgen; Paul, Johny; Stechele, Walter; Kröhnert, Manfred; Asfour, Tamin (2013): Acceleration of Optical Flow Computations on Tightly-Coupled Processor Arrays. PARS-Mitteilungen: Vol. 30, Nr. 1. Berlin: Gesellschaft für Informatik e.V., Fachgruppe PARS. PISSN: 0177-0454

Schlagwörter

Zitierform

DOI

Tags