【摘要】 从超声图像噪声的特点出发,利用各向异性扩散滤波技术,实现超声图像的自适应噪声抑制;并将其扩展到时间域图像序列的平滑中,以提高滤波的准确程度.模拟和临床实验表明:该方法可有效实现超声图像中斑点噪声的抑制,并提高图像序列的峰值信噪比;同时对心脏结构特征具有较好的保持和增强效果.更多还原

【Abstract】 The noise suppression of echocardiographic images should also increase the image contrast of heart structures.Based on the study of noise characteristic,this paper proposed a filtering approach which incorporates anisotropic diffusion with the noise distribution model.Then the method was extended into spatial-temporal region,for better smoothing accuracy.The experimental results show that the proposed algorithm is effective on noise suppression and contrast enhancement for echocardiographic images.更多还原