首页> 外文会议>Image Processing pt.3; Progress in Biomedical Optics and Imaging; vol.7 no.30 >ICA Domain Filtering for Reduction of Noise in X-ray Images
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ICA Domain Filtering for Reduction of Noise in X-ray Images

机译:ICA域滤波可减少X射线图像中的噪声

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Radiological imaging such as x-ray CT is one of the most important tools for medical diagnostics. Since the radiological images are always with some quantum noise and the reduction of quantum noise or Poisson noise in medical images is an important issue. In this paper, we propose a new filtering based on independent component analysis (ICA) for reduction of noise. In the proposed filtering, the image (projection) is first transformed to ICA domain and then the components of scattered x-ray are removed by a soft thresholding (Shrinkage). The proposed method has been demonstrated by using both standard images and Monte Carlo simulations. Experimental results show that the quality of the image can be dramatically improved without any blurring in edge by the proposed filter.
机译:X射线CT等放射成像是医学诊断最重要的工具之一。由于放射图像总是带有一些量子噪声,因此减少医学图像中的量子噪声或泊松噪声是一个重要的问题。在本文中,我们提出了一种基于独立分量分析(ICA)的新滤波以减少噪声。在提出的滤波中,图像(投影)首先被转换到ICA域,然后通过软阈值(收缩)去除散射X射线的分量。通过使用标准图像和蒙特卡洛模拟已证明了所提出的方法。实验结果表明,所提出的滤波器可以显着提高图像质量,而不会出现边缘模糊现象。

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