In this article we present a brief survey on skeletons. The skeleton types are reviewed and definitions given for each of them. The desirable skeleton properties are named: centred, thin, robust, connected, indexed, smooth, reliable and reconstructable. Also different methods groups of skeleton extraction are discussed based on: topological thinning, distance transform, geometrical, path planning, general field and propagating waves. Advantages and disadvantages are discussed for each of them.

Article in Lithuanian