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http://hdl.handle.net/10609/101697
Títol: | Preferred spatial frequencies for human face processing are associated with optimal class discrimination in the machine |
Autoria: | Keil, Matthias S. Lapedriza, Agata Masip Rodó, David Vitrià Marca, Jordi |
Altres: | Universitat de Barcelona (UB) Universitat Oberta de Catalunya (UOC) |
Citació: | Keil, M., Lapedriza, A., Masip, D. & Vitrià Marca, J. (2008). Preferred spatial frequencies for human face processing are associated with optimal class discrimination in the machine. PLoS ONE, 3(7), e2590-. doi: 10.1371/journal.pone.0002590 |
Resum: | Psychophysical studies suggest that humans preferentially use a narrow band of low spatial frequencies for face recognition. Here we asked whether artificial face recognition systems have an improved recognition performance at the same spatial frequencies as humans. To this end, we estimated recognition performance over a large database of face images by computing three discriminability measures: Fisher Linear Discriminant Analysis, Non-Parametric Discriminant Analysis, and Mutual Information. In order to address frequency dependence, discriminabilities were measured as a function of (filtered) image size. All three measures revealed a maximum at the same image sizes, where the spatial frequency content corresponds to the psychophysical found frequencies. Our results therefore support the notion that the critical band of spatial frequencies for face recognition in humans and machines follows from inherent properties of face images, and that the use of these frequencies is associated with optimal face recognition performance. |
Paraules clau: | Artificial face recognition systems Psychophysical studies |
DOI: | 10.1371/journal.pone.0002590 |
Tipus de document: | info:eu-repo/semantics/article |
Versió del document: | info:eu-repo/semantics/publishedVersion |
Data de publicació: | 2-jul-2008 |
Llicència de publicació: | http://creativecommons.org/licenses/by/3.0/es/ |
Apareix a les col·leccions: | Articles cientÍfics Articles |
Arxius per aquest ítem:
Arxiu | Descripció | Mida | Format | |
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preferred_spatial_freq.pdf | 278,79 kB | Adobe PDF | Veure/Obrir |
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