Wavelet-based speckle noise reduction in ultrasound B-scan images

被引：16

作者：

Rakotomamonjy, A ^{[1
]}

Deforge, P ^{[1
]}

Marché, P ^{[1
]}

机构：

[1] Lab Vis Robot, F-18020 Bourges, France

来源：

ULTRASONIC IMAGING | 2000年 / 22卷 / 02期

关键词：

echographic imaging; speckle filtering; ultrasound; wavelet; wavelet shrinkage;

D O I：

10.1177/016173460002200201

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

Speckle noise is known to be signal-dependent in ultrasound imaging. Hence, separating noise from signal becomes a difficult task. This paper describes a wavelet-based method for reducing speckle noise. We derive from the model of the displayed ultrasound image the optimal wavelet-domain filter, in the least mean-square sense. Simulations on synthetic data have been carried out in order to assess the performance of the proposed filter with regards to the classical wavelet shrinkage scheme, while phantom and tissue images have been used for testing it on real data. The results show that the filter effec tively reduces the speckle noise while preserving resolvable details.

引用

页码：73 / 94

页数：22

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