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Article type: Research Article
Authors: Spinéi, A.a | Pellerin, D.a; b; * | Fernandes, D.a | Hérault, J.b
Affiliations: [a] Laboratoire des Images et des Signaux, Institut National Polytechnique, 46 Av. Félix Viallet, 38031 Grenoble Cedex, France | [b] Institut des Sciences et Techniques, Université Joseph Fourier, Grenoble, France
Correspondence: [*] Corresponding author: E-mail: [email protected]
Abstract: Motion estimation in image sequences is a fundamental issue in many applications as for instance in artificial vision and three-dimensional scene reconstruction. Among all the existing techniques, we are particularly interested in methods using Gabor filters, which are known to furnish quality results but usually require intensive calculation. A new, fast energy-based method is presented, which combines in a direct manner the energetic responses of Gabor spatio-temporal filters organized in triads. An implementation of this technique on a general purpose Digital Signal Processor (DSP) board is described and the advantages compared with Very Large Scale Integration (VLSI) and parallel machine approaches. Our hardware implementation attains a reasonably fast output rate (several images/second) for a better resolution than in the most recent VLSI implementations. These results open interesting perspectives for real-time implementations (such as in mobile robotics) and for the obtention of higher-level results by combining different Gabor filter techniques (for motion, edge detection, texture analysis, etc.).
DOI: 10.3233/ICA-2000-7105
Journal: Integrated Computer-Aided Engineering, vol. 7, no. 1, pp. 67-77, 2000
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