Visual system based on artificial retina for motion detection

Authors:
Francisco Barranco;Javier Díaz;Eduardo Ros;Begoña Del Pino
Affiliations:
Department of Computer Architecture and Technology, University of Granada, Granada, Spain;Department of Computer Architecture and Technology, University of Granada, Granada, Spain;Department of Computer Architecture and Technology, University of Granada, Granada, Spain;Department of Computer Architecture and Technology, University of Granada, Granada, Spain
Venue:
IEEE Transactions on Systems, Man, and Cybernetics, Part B: Cybernetics
Year:
2009

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Abstract

We present a bioinspired model for detecting spatiotemporal features based on artificial retina response models. Event-driven processing is implemented using four kinds of cells encoding image contrast and temporal information. We have evaluated how the accuracy of motion processing depends on local contrast by using a multiscale and rank-order coding scheme to select the most important cues from retinal inputs. We have also developed some alternatives by integrating temporal feature results and obtained a new improved bioinspired matching algorithm with high stability, low error and low cost. Finally, we define a dynamic and versatile multimodal attention operator with which the system is driven to focus on different target features such as motion, colors, and textures.