Removing Random-Valued Impulse Noises by a Two-Staged Nonlinear Filtering Method
文献类型：期刊论文
| 作者 | Ahmad Ashfaq1,2,3 ; Lu Yanting1,2
|
| 刊名 | Transactions of Nanjing University of Aeronautics and Astronautics
 |
| 出版日期 | 2016-06 |
| 卷号 | 33期号:3页码:329-338 |
| 关键词 | image de-noising random-valued impulse noise nonlinear filter noisy pixel detection two-stage detection and correction method directional differences |
| 英文摘要 | Digital images are frequently contaminated by impulse noise（IN）during acquisition and transmission。 The removal of this noise from images is essential for their further processing。In this paper，a two-staged nonlinear filtering algorithm is proposed for removing random-valued impulse noise（RVIN）from digital images。 Noisy pixels are identified and corrected in two cascaded stages。The statistics of two subsets of nearest neighbors are employed as the criterion for detecting noisy pixels in the first stage，while directional differences are adopted as the detector criterion in the second stage。 The respective adaptive median values are taken as the replacement values for noisy pixels in each stage。 The performance of the proposed method was compared with that of several exsisting methods。 The experimental results show that the performance of the suggested algorithm is superior to those of the compared methods in terms of noise removal，edge preservation，and processing time。 |
| 学科主题 | 天文技术与方法 |
| 语种 | 英语 |
| 源URL | [http://ir.niaot.ac.cn/handle/114a32/1355]  |
| 专题 | 期刊论文 |
| 作者单位 | 1.南京天文光学技术研究所 2.中国科学院天文光学重点实验室 3.中国科学院大学 |
| 推荐引用方式 GB/T 7714 | Ahmad Ashfaq,Lu Yanting. Removing Random-Valued Impulse Noises by a Two-Staged Nonlinear Filtering Method[J]. Transactions of Nanjing University of Aeronautics and Astronautics,2016,33(3):329-338. |
| APA | Ahmad Ashfaq,&Lu Yanting.(2016).Removing Random-Valued Impulse Noises by a Two-Staged Nonlinear Filtering Method.Transactions of Nanjing University of Aeronautics and Astronautics,33(3),329-338. |
| MLA | Ahmad Ashfaq,et al."Removing Random-Valued Impulse Noises by a Two-Staged Nonlinear Filtering Method".Transactions of Nanjing University of Aeronautics and Astronautics 33.3(2016):329-338. |
入库方式： OAI收割
来源：南京天文光学技术研究所
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