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|Titel:||Motion as a cue for viewpoint invariance|
|Autoren:||Troje, Nikolaus F.|
Watson, Tamara L.
Hill, Harold C. H.
|Zusammenfassung:||Natural face and head movements were mapped onto a computer rendered threedimensional average of 100 laser-scanned heads in order to isolate movement information from spatial cues and nonrigid movements from rigid head movements (Hill & Johnston, 2001). Experiment 1 investigated whether subjects could recognize, from a rotated view, facial motion that had previously been presented at a full-face view usinga delayed match to sample experimental paradigm. Experiment 2 compared recognition for views that were either between or outside initially presented views. Experiment 3 compared discrimination at full face, threequarters, and profile after learningat each of these views. A significant face inversion effect in Experiments 1 and 2 indicated subjects were usingface-based information rather than more general motion or temporal cues for optimal performance. In each experiment recognition performance only ever declined with a change in viewpoint between sample and test views when rigid motion was present. Nonrigid, face-based motion appears to be encoded in a viewpoint invariant, object-centred manner, whereas rigid head movement is encoded in a more view specific manner.|
|Enthalten in den Sammlungen:||PsyDok|
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|Watson.pdf||1,48 MB||Adobe PDF||Öffnen/Anzeigen|
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