From: Perceptual expertise with objects predicts another hallmark of face perception Journal of Vision. 2010;10(4):15. doi:10.1167/10.4.15 Figure Legend: Spatial frequency (SF) and orientation filtering. First, the Fast Fourier Transform (FFT) is applied to a raw image (either face or car). Two complementary filters (8 × 8 radial matrices) are then applied to the Fourier-transformed image to preserve alternating combinations of the SF–orientation content from the raw image. The information preserved with each filter is represented by the white checkers. Finally, when returned to the spatial domain via the inverse FFT, the resulting complementary pair of images shares no overlapping combinations of SF and orientation information. Date of download: 1/23/2018 The Association for Research in Vision and Ophthalmology Copyright © 2018. All rights reserved.