Recognition of facial expressions by cortical multi-scale line and edge coding

Sousa, R.; Rodrigues, J. M. F.; du Buf, J. M. H.

http://hdl.handle.net/10400.1/887

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Authors

Sousa, R.

Rodrigues, J. M. F.

du Buf, J. M. H.

Abstract(s)

Empirical studies concerning face recognition suggest that faces may be stored in memory by a few canonical representations. Models of visual perception are based on image representations in cortical area V1 and beyond, which contain many cell layers for feature extraction. Simple, complex and end-stopped cells provide input for line, edge and keypoint detection. Detected events provide a rich, multi-scale object representation, and this representation can be stored in memory in order to identify objects. In this paper, the above context is applied to face recognition. The multi-scale line/edge representation is explored in conjunction with keypoint-based saliency maps for Focus-of-Attention. Recognition rates of up to 96% were achieved by combining frontal and 3/4 views, and recognition was quite robust against partial occlusions.

Keywords

Visão humana

URI

http://hdl.handle.net/10400.1/887

Citation

Sousa, R.; Rodrigues, J.M.F.; du Buf, J.M.H. Recognition of facial expressions by cortical multi-scale line and edge coding, Trabalho apresentado em ICIAR 2010, In Proc. Int. Conf. on Image Analysis and Recognition (ICIAR 2010), Póvoa do Varzim, Portugal, 2010.