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论文类型：期刊论文

发表时间：2012-08-25

发表刊物：Applied Mechanics and Materials

收录刊物：EI、CPCI-S、Scopus

卷号：195-196

页面范围：534-538

ISSN号：9783037854693

关键字：CT images; Level set method; speed function; outermost surface extraction

摘要：Outward directed surface extraction from imaging modalities is the first task in the design of implants. In this paper a method based on level set method is proposed to extract the directed surface from CT images. The process is composed of two steps. In the first step, Level Set method with a new speed function is employed to evolve zero level set to its destination and used to cut the desired bone part from the input CT images. In the second step, a simple method is used to extract the directed surface, usually the outward surface, from the separated bone part by removing the interior surface. The experimental results show the proposed method works well.