Technique of Paper Fragments Contour Extraction for Evidence Reconstruction System
Zongtan Zhou · Jisuanji fangzhen · 2006
Automatic reassembly of fragments is an important problem in the fields of computer vision and pattern recognition.It is applied to forensic identification,historical research,and malfunction analysis,etc.Current approaches for fragment contour extraction are mostly based on snake,clustering,threshold,which may result in much noise as well as unclosed contours.Level set method is a powerful tool for tracking the evolution of fronts propagating with curvature dependent speed.Recently,level set method has been used in a wide collection of problems such as medical image processing,the simulation of natural phenomenon and computer vision.In this paper,a new chain-code-based level set approach is proposed to eliminate the above disadvantages.Chain code,a powerful shape description method is introduced to the level set,and experiments show that this method is effective and can produce satisfactory results.