Vascular Image Processing Using Recursive Directional Filters

摘要：

　　In this paper we present a design method for a class of 2D recursive filter banks with wedge-shaped channels,based on frequency transformations.The design starts from a given analog prototype filter with specified parameters and a transfer function factorized into biquads.Applying adequate frequency transformations to these functions,the desired 2D filters are directly obtained in a factorized form.The approach is mainly analytical but also uses numerical approximations and is simple,efficient and versatile.These filter banks find applications in medical image analysis,as shown on some angiography images,for instance the detection of blood vessels with a specified orientation.A design example starting from imposed specifications and simulation results are provided.

关键词： 2D recursive filter design frequency transformations biomedical image filtering

作者: R. Matei D. Matei

作者单位: “Gh.Asachi Technical University of Iasi, Faculty of Electronics, Telecommunications and Information “Gr.T.Popa University of Medicine and Pharmacy, Faculty of Biomedical Engineering, Iasi, Romania

会议类型: 国际会议

会议名称: World Congress on Medical Physics and Biomedical Engineering (2012年医学物理及生物医学工程国际会议(IFMBE))

会议地点: 北京

会议语种:英文

页码: 947-950

在线出版日期: 2012-05-26（万方平台首次上网日期，不代表论文的发表时间）