A robust anisotropic edge detection method for carotid ultrasound image processing

被引:5
作者
Rouco, Jose [5 ,6 ]
Carvalho, Catariba [1 ]
Domingues, Ana [1 ]
Azevedo, Elsa [3 ,4 ]
Campilho, Aurelio [1 ,2 ]
机构
[1] FEUP, INESC TEC INESC Technol & Sci, Porto, Portugal
[2] Univ Porto, FEUP Fac Engn, Rua Dr Roberto Frias S-N, P-4200465 Porto, Portugal
[3] Univ Porto, FMUP Dept Clin Neurosci & Mental Hlth, Fac Med, P-4200319 Porto, Portugal
[4] Sao Joao Hosp Ctr, Dept Neurol, P-4200319 Porto, Portugal
[5] UDC, CITIC Res Ctr Informat & Commun Technol, La Coruna, Spain
[6] Univ A Coruna, Dept Comp Sci, Campus Elvina S-N, La Coruna 15071, Spain
来源
KNOWLEDGE-BASED AND INTELLIGENT INFORMATION & ENGINEERING SYSTEMS (KES-2018) | 2018年 / 126卷
关键词
edge detection; anisotropic filter; carotid ultrasound; intima-media; INTIMA-MEDIA THICKNESS; B-MODE ULTRASOUND; INTEGRATED-SYSTEM; DISEASE RISK; SEGMENTATION; ATHEROSCLEROSIS; PREDICTION;
D O I
10.1016/j.procs.2018.08.006
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
A new approach for robust edge detection on B-mode ultrasound images of the carotid artery is proposed in this paper. The proposed method uses anisotropic Gaussian derivative filters along with non-maximum suppression over the overall artery wall orientation in local regions. The anisotropic filters allow using a wider integration scale along the edges while preserving the edge location precision. They also perform edge continuation, resulting in the connection of isolated edge points along linear segments, which is a valuable feature for the segmentation of the artery wall layers. However, this usually results in false edges being detected near convex contours and isolated points. The use of non-maximum suppression over pooled local orientations is proposed to solve this issue. Experimental results are provided to demonstrate that the proposed edge detector outperforms other common methods in the detection of the lumen-intima and media-adventia layer interfaces of the carotid vessel walls. Additionally, the resulting edges are more continuous and precisely located. (C) 2018 The Authors. Published by Elsevier Ltd.
引用
收藏
页码:723 / 732
页数:10
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