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“I Look in Your Eyes, Honey”: Internal Face Features Induce Spatial Frequency Preference for Human Face Processing

Figure 2

From images to feature maps.

Illustration of the various steps involved in processing the face images (i) (size 256×256 pixels) with Gabor wavelets of orientation and spatial frequency (ii), where five response maps (iii) (size 256×256 pixels) are obtained at each . Response maps are subsequently centered at the four feature positions and cropped as illustrated with Figure 3. The aligned and cropped maps are averaged, giving rise to corresponding feature maps (iv) (size 127×127 pixels). Feature maps are parameterized by feature (4 possible values), gender (2), spatial frequency (39), orientation (12), and response type (5), what amounts to a total of 18720 feature maps.

doi: https://doi.org/10.1371/journal.pcbi.1000329.g002