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Removing Random-Valued Impulse Noises by a Two-Staged Nonlinear Filtering Method
Ahmad Ashfaq1,2,3; Lu Yanting1,2
2016-06
Source PublicationTransactions of Nanjing University of Aeronautics and Astronautics
Volume33Issue:3Pages:329-338
AbstractDigital 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。
KeywordImage De-noising Random-valued Impulse Noise Nonlinear Filter Noisy Pixel Detection Two-stage Detection And Correction Method Directional Differences
Subject Area天文技术与方法
Language英语
Document Type期刊论文
Identifierhttp://ir.niaot.ac.cn/handle/114a32/1355
Collection中国科学院南京天文光学技术研究所_期刊论文
中科院天文光学技术重点实验室_期刊论文
Affiliation1.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
Recommended Citation
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.
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