基于小波阈值对磁共振图像去噪的研究进展

Research progress of magnetic resonance image denoising based on wavelet threshold

图像降噪是MRI质量控制及伪影处理的重要环节之一,而通过小波阈值去噪方法能够大幅提高的MR图像质量,是近年来图像去噪的研究热点,本文综合相关文献研究,概述了小波阈值去噪的发展历程及常用的方法,探讨了软、硬阈值两种算法的优缺点,并研讨了一种新的改良小波阈值函数算法。

In recent years,the quality of MR image can be greatly improved by wavelet threshold denoising method,which is the research hotspot of image denoising in recent years.This paper summarizes the development of wavelet threshold denoising and common methods,discusses the advantages and disadvantages of soft threshold and hard threshold algorithm,and discusses a new improved wavelet threshold function algorithm.