期刊
ELECTRONICS LETTERS
卷 46, 期 2, 页码 120-U33出版社
INST ENGINEERING TECHNOLOGY-IET
DOI: 10.1049/el.2010.2063
关键词
-
资金
- National Natural Science Foundation of China [60673006, 60533060, 60873181, U0935004]
- New Century Excellent Talents in University of China [NCET-05-0275]
Low contrast and poor quality are main problems in the production of medical images. By using the wavelet transform and Haar transform, a novel image enhancement approach is proposed. First, a medical image was decomposed with wavelet transform. Secondly, all high-frequency sub-images were decomposed with Haar transform. Thirdly, noise in the frequency field was reduced by the soft-threshold method. Fourthly, high-frequency coefficients were enhanced by different weight values in different sub-images. Then, the enhanced image was obtained through the inverse wavelet transform and inverse Haar transform. Lastly, the image's histogram was stretched by nonlinear histogram equalisation. Experiments showed that this method can not only enhance an image's details but can also preserve its edge features effectively.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据