Vitale, Jonathan

Williams, Mary-Anne

Johnston, Benjamin

2016

<p>Valentine's face-space suggests that faces are represented in a psychological multidimensional space according to their perceived properties. However, the proposed framework was initially designed as an account of invariant facial features only, and explanations for dynamic features representation were neglected. In this paper we propose, develop and evaluate a computational model for a twofold structure of the face-space, able to unify both identity and expression representations in a single implemented model. To capture both invariant and dynamic facial features we introduce the <i>face-space duality hypothesis</i> and subsequently validate it through a mathematical presentation using a general approach to dimensionality reduction. Two experiments with real facial images show that the proposed face-space: (1) supports both identity and expression recognition, and (2) has a twofold structure anticipated by our formal argument.</p>

Proceedings of the 38th Annual Conference of the Cognitive Science Society, 38(0), p. 514-519

https://hdl.handle.net/1959.11/59490

Cognitive Science Society

The face-space duality hypothesis: a computational model

Conference Publication

Publication