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| 基于分割和累积指数变换的MR图像增强算法 | |
| 引用本文： | 陈北京,李均利,陈刚,魏平.基于分割和累积指数变换的MR图像增强算法[J].计算机工程与应用,2006,42(16):29-31,52. |
| 作者姓名： | 陈北京 李均利 陈刚 魏平 |
| 作者单位： | 1. 浙江大学图象图形研究所,杭州,310027;宁波工程学院电子与信息工程学院,宁波,315016 2. 宁波大学数字技术与应用软件研究所,宁波,315211 3. 浙江大学图象图形研究所,杭州,310027;宁波大学数字技术与应用软件研究所,宁波,315211 4. 浙江大学计算机科学与技术学院,杭州,310027 |
| 基金项目： | 国家高技术研究发展计划(863计划);浙江省宁波市科技攻关计划 |
| 摘 要： | 文章提出了一种MR图像增强的新算法。首先由多阈值分割算法将图像分割为不同的区域,然后统计出各区域的灰度均值和方差,由这两个特征构造各区域的累积指数非线性变换,并分别对相应区域进行增强。实验表明,用该算法增强后的MR图像在视觉上增强了图像对比度,加强目标的细节,还可以去除部分噪声,在实现上缩短了CPU时间。 |
| 关 键 词： | 图像增强 多阈值分割 非线性变换 Otsu阈值算法 累积指数变换 |
| 文章编号： | 1002-8331-（2006）16-0029-03 |
| 收稿时间： | 2005-12 |
| 修稿时间： | 2005-12 |
A MR Image Enhancement Algorithm Based on Segmentation and Accumulating Index Transformation |
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| Chen Beijing,Li Junli,Chen Gang,Wei Ping.A MR Image Enhancement Algorithm Based on Segmentation and Accumulating Index Transformation[J].Computer Engineering and Applications,2006,42(16):29-31,52. | |
| Authors: | Chen Beijing Li Junli Chen Gang Wei Ping |
| Affiliation: | 1Institute of Computer Graphics and Image Processing,Zhejiang University,Hangzhou 310027; 2institute of DSP and Software Techniques, Ningbo University,Ningbo 315211 ;3School of Electronic and Information,Ningbo University of Technology,Ningbo 315016; 4College of Computer Science,Zhejiang University,Hangzhou 310027 |
| Abstract: | In this paper,a new algorithm for MR image enhancement is proposed.First the image segmentation based on muhilevcl is carried out.Then the mean and variance of each segmented regions is calculated and used for constructing the accumulating index transformations,which is used to enhance the corresponding region.Compared to CLAHE,this algorithm effectively achieves the balance between the edge enhancement and noise retraining while it enhances the MR image luminance contrast with less CPU time, |
| Keywords: | Image enhancement multilevel segmentation nonlinear transformation Otsu threshold algorithm accumulating index transformation |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |