“School of Cognitive Sciences”
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| Paper IPM / Cognitive Sciences / 9582 |
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Faces are complex and important visual stimuli for humans and are subject to many psychophysical studies (Wilson et al, 2002 Vision Research 42 2909 - 2923). A new parametric method for generating synthetic faces is proposed. Head shape and inner hairline are sampled in a polar coordinate frame, located at the center of the image at 16 and 9 equi-angular positions. Four separate frames are placed at nose tip, each eye center, and lips to sample them with 7, 20, and 24 angular points, respectively. Each eyebrow is sampled with 8 points in eye coordinate system. Augmenting feature vectors, their distance from the origin, and other facial details generates a vector of size 95. For synthesized face, intermediate points are generated with spline curves and then the whole image is filtered by a band-pass filter. Subjects participating in face-discrimination task were very successful at matching synthetic faces with their real counterparts (average performance 97
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