Browsing by Subject "zero crossings"

Now showing items 1-3 of 3

  • The Implicit Constraints of the Primal Sketch 

    Unknown author (1981-10-01)
    Computational theories of structure-from-motion and stereo vision only specify the computation of three-dimensional surface information at points in the image at which the irradiance changes. Yet, the visual perception ...

  • On Edge Detection 

    Unknown author (1984-08-01)
    Edge detection is the process that attempts to characterize the intensity changes in the image in terms of the physical processes that have originated them. A critical, intermediate goal of edge detection is the detection ...

  • Zero-Crossings and Spatiotemporal Interpretation in Vision 

    Unknown author (1982-05-01)
    We will briefly outline a computational theory of the first stages of human vision according to which (a) the retinal image is filtered by a set of centre-surround receptive fields (of about 5 different spatial sizes) ...