A New Feature Based on Two Direction Angles Difference for Edge Detection

摘要：

Traditionally,the gradient magnitude of an image pixel was the only feature in various image edge detection methods.However,this feature does not have good performance in noisy and low-contrast conditions,such as medical ultrasound images.A new edge detection feature,based on two brightness change direction angles difference (DAD)of one pixel in two different calculation methods,is proposed.In this work, corresponding algorithm is simply put forward to test this new feature,and the noised weak edge with low contrast is detected successfully without any post processing.Experimental results show that DAD is effective for the edge detection in noisy and low-contrast images.

关键词： Edge detection,Direction angles difference Region,Basic structure.

作者: Hua Bao De-yu Li Yu-bo Fan Jiang-li Lin Tian-fu Wang

作者单位: Biomechanics Lab,Sichuan University, Chengdu,Sichuan,610065,China Biomechanics Lab,Sichuan University, Chengdu,Sichuan,610065,China;Department of Bioengineering,Beiha Department of Biomedical Engineering,Sichuan University, Chengdu,Sichuan,610065,China College of Information Engineering,Shenzhen University Shenzhen,Guangdong,518060,China

会议类型: 国际会议

会议名称: 2007 IEEE/ICME International Conference on Complex Medical Engineering-CME2007(CME2007 第二届国际复合医学工程学术大会)

会议地点: 北京

会议语种:英文

页码: 731-735

在线出版日期: 2007-05-23（万方平台首次上网日期，不代表论文的发表时间）