• DocumentCode
    1724791
  • Title

    A new method of estimating shape from shading by using a constraint at zero-crossings of image brightness

  • Author

    Atsuta, Kiyoaki ; Sangworasil, Manas ; Kondo, Shozo

  • Author_Institution
    Dept. of Commun. Eng., Tokai Univ., Hiratsuka, Japan
  • fYear
    1988
  • Firstpage
    666
  • Abstract
    An iterative method is proposed for estimating shape from shading using a constraint of surface orientation at the zero-crossings of the image brightness. This method can be applied to objects with concave surfaces and one can obtain several different 3D shapes from the same shading information. The ∇2G filter (a Gaussian operator) is used to detect the zero-crossings of the image brightness, which given information about curvature change of the surface
  • Keywords
    filtering and prediction theory; iterative methods; pattern recognition; picture processing; ∇2G filter; 3D shapes; Gaussian operator; concave surfaces; image brightness; iterative method; pattern recognition; picture processing; shape estimation; shape-from-shading estimation; surface orientation; zero-crossings; Additive noise; Boundary conditions; Brightness; Constraint theory; Equations; Image reconstruction; Iterative methods; Reflectivity; Shape; Surface reconstruction;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Pattern Recognition, 1988., 9th International Conference on
  • Conference_Location
    Rome
  • Print_ISBN
    0-8186-0878-1
  • Type

    conf

  • DOI
    10.1109/ICPR.1988.28322
  • Filename
    28322
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1724791