AI Memos (1959 - 2004): Recent submissions

Now showing items 484-486 of 1217

    • Against Direct Perception 

      Ullman, S. (1980-03-01)
      Central to contemporary cognitive science is the notion that mental processes involve computations defined over internal representations. This notion stands in sharp contrast with another prevailing view ??e direct ...

    • A Model for the Spatio-Temporal Organization of X- and Y-Type Ganglion Cells in the Primate Retina 

      Richter, J.; Ullman, S. (1980-04-01)
      A model is proposed for the spatial and temporal characteristics of X- and Y-type responses of ganglion cells in the primate retina. The model is related to a theory of directional selectivity proposed by Marr & Ullman ...

    • Determining Optical Flow 

      Horn, Berthold K.P.; Schunck, Brian G. (1980-04-01)
      Optical flow cannot be computed locally, since only one independent measurement is available from the image sequence at a point, while the flow velocity has two components. A second constraint is needed. A method for ...