Browsing AI Memos (1959 - 2004) by Author "Yuille, A.L."

Now showing items 1-5 of 5

    • Fingerprints Theorems for Zero-Crossings 

      Yuille, A.L.; Poggio, T. (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. ...

    • A Generalized Ordering Constraint for Stereo Correspondence 

      Yuille, A.L.; Poggio, T. (1984-05-01)
      The ordering constraint along epipolar lines is a powerful constraint that has been exploited by some recent stereomatching algorithms. We formulate a generalized ordering constraint, not restricted to epipolar lines. ...

    • Scaling Theorems for Zero-Crossings 

      Yuille, A.L.; Poggio, T. (1983-06-01)
      We characterize some properties of the zero-crossings of the laplacian of signals - in particular images - filtered with linear filters, as a function of the scale of the filter (following recent work by A. Witkin, 1983). ...

    • Shape from Shading, Occlusion and Texture 

      Yuille, A.L. (1987-05-01)
      Shape from Shading, Occlusion and Texture are three important sources of depth information. We review and summarize work done on these modules.

    • The Smoothest Velocity Field and Token Matching 

      Yuille, A.L. (1983-08-01)
      This paper presents some mathematical results concerning the measurement of motion of contours. A fundamental problem of motion measurement in general is that the velocity field is not determined uniquely from the ...