计算机应用与软件2013，Vol.30Issue(3)：258-262,303,6.DOI:10.3969/j.issn.1000-386x.2013.03.068
基于方向滤波的超声图像边缘增强
EDGE ENHANCEMENT OF ULTRASOUND IMAGE BASED ON DIRECTIONAL FILTERING
摘要
Abstract
Because of the existence of speckle noises, classical edge-enhanced operators will result in strengthening the speckle noises of medical ultrasound images and degrading the contrast resolution meanwhile. In view of this, we propose an algorithm of medical ultrasound image edge enhancement based on directional filtering. This algorithm reduces the speckle noises first, and then segments the image based on texture analysis to determine the strong edges, the weak edges and the reverberation artifacts. Finally, based on directional filtering, the algorithm calculates the local directions of strong edge and weak edge, designs directional filters, and adaptively selects the directional filter according to the direction of image for filtering, as well as enhances the image edges. Experimental results show that the original medical ultrasound image is effectively enhanced, and the edge details are preserved. This algorithm can effectively extract edge-enhanced regions and achieves satisfied enhanced effect on tissue boundaries as well. At the same time, the reverberation artifacts of the image are kept unchanged.关键词
超声图像/斑点去噪/纹理分析/方向滤波/边缘增强Key words
Ultrasound image/ Speckle denoise/ Texture analysis/ Directional filtering/ Edge enhancement分类
信息技术与安全科学引用本文复制引用
张婷婷,刘东权..基于方向滤波的超声图像边缘增强[J].计算机应用与软件,2013,30(3):258-262,303,6.
