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Robust Contrast Enhancement for Microcalcification in Mammography

机译:乳腺X射线摄影中微钙化的稳健对比度增强

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摘要

Microcalcification is important for early breast cancer detection. But due to the low contrast of microcalcifications and same properties as noise, it is difficult to detect microcalcification. In this paper, we propose a robust contrast enhancement method for microcalcification. The proposed method is modified homomorphic filtering in wavelet domain based on background noise information. By using the proposed method, the mammogram contrast can be stretched adaptively thereby enhancing the contrast. Experimental results show that the proposed method improves the visibility of microcalcifications. The contrast improvement index (CII) is increased while noise standard deviation is decreased.
机译:微钙化对于早期乳腺癌检测很重要。但是,由于微钙化的对比度低以及与噪声相同的特性,因此很难检测到微钙化。在本文中,我们提出了一种鲁棒的对比度增强方法,用于微钙化。该方法是一种基于背景噪声信息的小波域同态滤波改进方法。通过使用所提出的方法,可以自适应地拉伸乳房X光照片的对比度,从而增强对比度。实验结果表明,该方法提高了微钙化的可见度。对比度改进指数(CII)增大,而噪声标准偏差减小。

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