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Conference on Design and Architectures for Signal and Image Processing (DASIP 2010), Edinburgh : Royaume-Uni (2010)

GPU implementation of motion estimation for visual saliency

Anis Rahman 1, Dominique Houzet 1, Denis Pellerin 1, Lionel Agud 1

CIBLE Région Rhône-Alpes Collaboration(s)

(26/10/2010)

Visual attention is a complex concept that includes many processes to find the region of concentration in a visual scene. In this paper, we discuss a spatio-temporal visual saliency model where the visual information contained in videos is divided into two types: static and dynamic that are processed by two separate pathways. These pathways produce intermediate saliency maps that are merged together to get salient regions distinct from what surround them. Evidently, to realize a more robust model will involve inclusion of more complex processes. Likewise, the dynamic pathway of the model involves compute-intensive motion estimation, that when implemented on GPU resulted in a speedup of up to 40x against its sequential counterpart. The implementation involves a number of code and memory optimizations to get the performance gains, resultantly materializing real-time video analysis capability for the visual saliency model.

1 :	Grenoble Images Parole Signal Automatique (GIPSA-lab)
	CNRS : UMR5216 – Université Joseph Fourier - Grenoble I – Université Pierre-Mendès-France - Grenoble II – Université Stendhal - Grenoble III – Institut Polytechnique de Grenoble - Grenoble Institute of Technology

Domaine

:

Informatique/Calcul parallèle, distribué et partagé Informatique/Traitement des images

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Contributeur : Dominique Houzet <>

Soumis le : Mardi 8 Février 2011, 18:02:11

Dernière modification le : Jeudi 28 Juillet 2011, 16:06:30