Browsing AI Memos (1959 - 2004) by Author "Katsushi"

Now showing items 1-4 of 4

    • Constructing a Depth Map from Images 

      Ikeuchi; Katsushi (1983-08-01)
      This paper describes two methods for constructing a depth map from images. Each method has two stages. First, one or more needle maps are determined using a pair of images. This process employs either the Marr-Poggio-Grimson ...

    • Determining Attitude of Object from Needle Map Using Extended Gaussian Image 

      Ikeuchi; Katsushi (1983-04-01)
      An extended Gaussian image (EGI) is constructed by mapping the surface normals of an object onto the Gussian sphere. The attitude of an object is greatly constrained by the global distribution of EGI mass over the ...

    • Numerical Shape from Shading and Occluding Contours in a Single View 

      Ikeuchi; Katsushi (1979-11-01)
      An iterative method of using occluding boundary information is proposed to compute surface slope from shading. We use a stereographic space rather than the more commonly used gradient space in order to express occluding ...

    • Shape from Regular Patterns: An Example of Constraint Propagation in Vision 

      Ikeuchi; Katsushi (1980-03-01)
      An algorithm is proposed for obtaining local surface orientation from the apparent distortion of surface patterns in an image. A spherical projection is used for imaging. A mapping is defined from points on this image ...