基于不同窗口形状下的CT图像中值滤波算法

CT作为医学影像工具,对CT图像的去噪声处理是医学图像预处理中的重要环节,中值滤波是传统滤波算法中对滤除椒盐噪声有较好滤波性能的方法之一,滤波窗口形状有着多样性。文中对于不同形状窗口进行了程序编写,研究了不同形状的滤波窗口、不同窗口大小的中值滤波算法对CT图像的去噪效果,这些影响到中值滤波中心像素值的选取以及滤波处理的计算量。实验结果表明,中值滤波的效果有差别,为改进中值滤波算法及对CT图像的去噪声处理提供了参考,同时也有利于研究中值滤波与其他滤波方法结合进行去噪声处理,可以更好地保留图像的细节。

CT Image Median Filtering Algorithm Based on Different Shapes of Window

CT is one of the important medical imaging tools,and CT image denoise is key to the medical image preprocessing.Median filter is one of the traditional filtering algorithms for removing the salt &pepper noise,which is good in filtering properties.The median filter filter window has a diversity of shapes,which are programed seperately in this article to study the effect the shape and size of the filtering window on the median filtering algorithm.The median filtering center pixel value selection and the amount of calculation in filtering processing are influenced.Experimental results show that the effect of median filtering have difference,and the algorithm can be combined with other filtering methods to better retains the detail of the image.This article provides valuable reference for further improvement of the median fitering algortithm and CT image denoising.