A nonlocal filter for local denoising using the Wigner transform
文献类型：期刊论文
| 作者 | Chu, Junqiu1,2,3; Ma, Haotong1,2,3; Ren, Ge1,2,3; Qi, Bo1,2,3 |
| 刊名 | Optics and Lasers in Engineering
 |
| 出版日期 | 2019-11-02 |
| 卷号 | 122页码:105-112 |
| 关键词 | Image process Computational optical imaging Wigner transform Optical field imaging Local denoising |
| ISSN号 | 0143-8166 |
| DOI | 10.1016/j.optlaseng.2019.05.029 |
| 文献子类 | 期刊论文 |
| 英文摘要 | Nonlocal means denoising (NLM) and block-matching and 3D filtering (BM3D) have become the most popular algorithms for image processing. The disadvantage of these methods is that they cannot be realized by hardware implementation. The Wigner distribution function (WDF) has advantages such as explicit physical meaning, spatial frequency distribution of each pixel, and suitability for optical implementation. In recent years, the wide-field imaging system has been used extensively in multiple situations such as aviation, medicine, and traffic. Large-field images often have multiple point spread functions (PSF) and local random noise. However, the results have shown that most nonlocal filters have inadequate effects on local noise filtering. This paper analytically examines the Wigner transform of a multi-Gaussian function and investigates the effects of cross-term and noise on filter reconstruction in image processing. Based on the results, a new space-variant filter with a simple mathematical formula is proposed and applied to local high-frequency noise filtering. Since the filter is closely related to the intensity distribution in the spatial and frequency domains, it provides a simple way to process local noise while simultaneously preserving the high-frequency information of the image. © 2019 |
| WOS关键词 | CROSS-TERMS ; VILLE DISTRIBUTION ; SUPPRESSION ; ELIMINATION |
| WOS研究方向 | Optics |
| 语种 | 英语 |
| WOS记录号 | WOS:000500224400013 |
| 出版者 | Elsevier Ltd |
| 源URL | [http://ir.ioe.ac.cn/handle/181551/9757]  |
| 专题 | 光电技术研究所_光电工程总体研究室（一室） |
| 作者单位 | 1.Chinese Academy of Sciences, Institute of Optics and Electronics, Chengdu; 610209, China; 2.Key Laboratory of Optical Engineering, Chinese Academy of Sciences, Chengdu; 610209, China 3.University of Chinese Academy of Sciences, Beijing; 101408, China; |
| 推荐引用方式 GB/T 7714 | Chu, Junqiu,Ma, Haotong,Ren, Ge,et al. A nonlocal filter for local denoising using the Wigner transform[J]. Optics and Lasers in Engineering,2019,122:105-112. |
| APA | Chu, Junqiu,Ma, Haotong,Ren, Ge,&Qi, Bo.(2019).A nonlocal filter for local denoising using the Wigner transform.Optics and Lasers in Engineering,122,105-112. |
| MLA | Chu, Junqiu,et al."A nonlocal filter for local denoising using the Wigner transform".Optics and Lasers in Engineering 122(2019):105-112. |
入库方式： OAI收割
来源：光电技术研究所
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