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首页> 外文会议>International Workshop on Digital Mammography(IWDM 2006); 20060618-21; Manchester(GB) >Breast Component Adaptive Wavelet Enhancement for Soft-Copy Display of Mammograms
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Breast Component Adaptive Wavelet Enhancement for Soft-Copy Display of Mammograms

机译：乳房成分自适应小波增强，用于乳房X光照片的软拷贝显示

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摘要

A method that performs multiresolution enhancement, adaptive to breast components, for optimal visualization of the entire breast area is presented. The method includes an edge detection step to distinguish breast area from mammogram background and employs Gaussian mixture modeling to segment breast components (uncompressed fat, fat and dense). The original image is decomposed using a redundant discrete wavelet transform and magnitude coefficients corresponding to each breast component are linearly mapped for contrast enhancement. Coefficient mapping is controlled by a gain factor provided by the parameters of the modeled breast components. The processed image is derived by reconstruction of the modified wavelet coefficients. The algorithm is compared with two enhancement methods proposed for soft-copy display, in a dataset of 68 mammograms containing lesions. The proposed method demonstrates increased performance in accentuating lesions embedded in fatty or dense parenchyma, as well as in visualization of anatomical features in the entire breast area.
机译：提出了一种执行多分辨率增强方法的方法，以适应整个乳房区域的可视化，从而适应了乳房的各个组成部分。该方法包括一个边缘检测步骤，以区分乳房区域与乳房X线照片背景，并采用高斯混合模型来分割乳房成分（未压缩脂肪，脂肪和浓密脂肪）。使用冗余离散小波变换分解原始图像，并线性映射与每个乳房分量对应的幅度系数以增强对比度。系数映射由建模的乳房成分的参数提供的增益因子控制。通过重建修改的小波系数来导出处理后的图像。在包含病灶的68个乳房X线照片的数据集中，将该算法与为软拷贝显示提出的两种增强方法进行了比较。所提出的方法在加重脂肪或致密实质中包埋的病变以及整个乳房区域的解剖特征可视化方面表现出增强的性能。

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