spherical image

spherical image

[¦sfir·ə·kəl ′im·ij] (mathematics) Also known as spherical representation. For a point on a surface, the end point of the radius of a unit sphere parallel to the positive direction of the normal to the surface at the point. For a surface, a portion of a unit sphere consisting of all the end points of those radii of the sphere that are parallel to the positive directions of normals to the surface. Also known as Gaussian representation. spherical indicatrix