Abstract: The extraction of the target image skeleton is an important part of the intelligent analysis.Some flaws of Zhang parallel thinning algorithm are that the skeleton is non-single-pixel and also easily produces burr.This article proposed a fast image skeleton extraction algorithm to obtain a single pixel and eliminate burr.Firstly,the binary target image needs to be morphologically preprocessed to fill the tiny holes and smooth the boundary.Secondly,this article used 8 direction chain code scanning and coding principle to achieve a single pixel.Finally,this article adopted the 8 direction chain code to remove the burr.The experiments show that the algorithm can rapidly and effectively obtain a single pixel width and remove the burrs.

Key words: Skeleton,Single pixel width,Burr,Direction chain code