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Responses of simple cells: events, interferences, and ambiguities
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The responses of "complex" simple cells, which are an abstraction of pairs of simple cells having real receptive fields with phases in quadrature, to ideal line and edge patterns (events) are studied. These responses are generalized for events which are convolved with a Gaussian blur function. Normal and abnormal scalings lead to a unified description of the responses of cells with scaled receptive fields to ideal and blurred events. Scale tuning requirements and orientation estimation accuracy are derived. The responses in ambiguous neighbourhoods, where there are two events in the cells' receptive fields, are analyzed, considering both parallel and crossing event combinations. © 1993 Springer-Verlag.
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Springer-Verlag