Catalogue of Artificial Intelligence Techniques
Aliases: Generalised Cone
Keywords: shape description
Author(s): Luis Jenkins
A currently popular method for three-dimensional shape description. Generalised cylinders are a class of objects obtained by extending the definition of a cylinder. An ordinary cylinder is the volume swept out by a circular disc moving perpendicular to a straight line segment that passes through its centre called the axis or spine of the cylinder. A generalised cylinder is then obtained by extending the definition to include things like:
- A curved spine.
- The radius of the disc varying as a function of the position along the spine.
- The cross section being some planar figure other than a circle.
- The cross section held at a non-perpendicular angle to the spine.
- Marr, D., Analysis of occluding contour, Proc. Roy. Soc. Lond., vol.B197, 1977, pp.441--475.