摘要
提出了一种新的基于小波变换的自适应MRI增强算法。该新算法采用两个非线性自适应规则分别增强低频和高频的小波系数,并且在增强图像信号的同时抑制、减小其中的噪声。实验结果表明新算法增强后的图像具有很好的对比度,且结果图像中的噪声要比其他基于小波变换的自适应增强算法得到的增强后的图像中的噪声要少很多。
This paper proposed a new wavelet-based adaptive enhancement algorithm for MRI.In the new algorithm,two non-linear adaptive rules had been used to enhance both of lower and higher frequency wavelets coefficients separately,and reduce the noise at the same time.The experiment results show that enhanced images obtained by new algorithm have better contrast of gray levels and less noise comparing with results from other wavelet-based adaptive enhancement algorithms.
出处
《计算机应用研究》
CSCD
北大核心
2008年第6期1771-1772,1775,共3页
Application Research of Computers
基金
国家自然科学基金资助项目(30470487)
