| 引用本文: | 刘莉,谭吉春.分数域图像混合噪声盲复原方法.[J].国防科技大学学报,2011,33(3):52-55,98.[点击复制] |
| LIU Li,TAN Jichun.A New Method of Mixed Noise Image Restoration in Fractional Fourier Transform Domain[J].Journal of National University of Defense Technology,2011,33(3):52-55,98[点击复制] |
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| 分数域图像混合噪声盲复原方法 |
| 刘莉1,2, 谭吉春3 |
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(1.国防科技大学 光电学院，湖南 长沙 410073;2.长沙学院 电子与通信工程系，湖南 长沙 410003;3.国防科技大学 理学院，湖南 长沙 410073)
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| 摘要: |
| 提出了一种在分数傅里叶变换域中对图像进行复原的新方法。对于模糊且含有高斯噪声和啁啾噪声的图像进行分数傅里叶变换，利用各种噪声在分数域中的性质估计出复原图像的分数谱，再通过逆分数傅里叶变换返回空域，获得复原图像。在图像受到多种因素导致退化的情况下，以及在无任何先验知识的前提下，此方法可以简化复原过程，进行图像盲复原。 |
| 关键词: 分数傅里叶变换 噪声谱 图像复原 |
| DOI： |
| 投稿日期：2011-03-05 |
| 基金项目: |
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| A New Method of Mixed Noise Image Restoration in Fractional Fourier Transform Domain |
| LIU Li1,2, TAN Jichun3 |
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(1.College of Optoelectrics, National Univ. of Defense Technology, Changsha 410073, China;2.
2.Department of Electronics and Communications Engineering, Changsha University, Changsha 410003, China;3.College of Science, National Univ. of Defense Technology, Changsha 410073, China)
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| Abstract: |
| A new method of image restoration based in Fractional Fourier Transform (FRT) domain is presented. The blurred image including higher intensity Gaussian noise and chirp noise is transformed into FRT domain. Only when the noise FRT spectrum is well estimated, the required image FRT spectrum can be well separated and return to the space domain with the inverse ransformation. As a result, we find that the method simplifies the process of restoration and the blind restoration will be obtained when we know nothing about the degradation process affected by various factors. |
| Keywords: fractional fourier transform noise spectrum image restoration |
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