INDEPENDENT COMPONENTS OF OPTICAL FLOWS HAVE MSTd-LIKE RECEPTIVE FIELDS
Ki-Young Park, Marwan Jabri, Soo-Young Lee, Terrence J. Sejnowski
We describe in this paper the properties of independent components of
optical flow of moving objects. Video sequences of objects seen by an
observer moving at various angles, directions and distances are used
to produce optical flow maps. These maps are then processed using
independent component analysis which yields filters that resemble the
receptive fields of dorsal medial superior temporal cells of the
primate brain. Contraction, expansion, rotation and translation
receptive fields have been identified. Our results support Barlow's
sensory coding theory and is in-line with other work that dealt with
the independent components of image and video intensities.