AI Memos (1959 - 2004): Recent submissions

Now showing items 433-435 of 1217

    • Fingerprints Theorems for Zero-Crossings 

      Yuille, A.L.; Poggio, Tomaso A (1983-10-01)
      We prove that the scale map of the zero-crossings of almost all signals filtered by the second derivative of a gaussian of variable size determines the signal uniquely, up to a constant scaling and a harmonic function. ...

    • Semantic Support for Work in Organizations 

      Barber, Gerald; Jong, Peter de; Hewitt, Carl (1983-04-01)
      Present day computer systems cannot implement much of the work carried out in organizations such as: planning, decision making, analysis, and dealing with unanticipated situations. Such organizational activities have ...

    • Zero-Crossings on Lines of Curvature 

      Yuille, A. (1984-12-01)
      We investigate the relations between the structure of the image and events in the geometry of the underlying surface. We introduce some elementary differential geometry and use it to define a coordinate system on the ...