Impulse Noise Filtering Using Robust Pixel-Wise S-Estimate of Variance
A novel method for impulse noise suppression in images, based on the pixel-wise S-estimator, is introduced. The S-estimator is an alternative for the well-known robust estimate of variance MAD, which does not require a location estimate and hence is more appropriate for asymmetric distributions, fre...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2010-01-01
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| Series: | EURASIP Journal on Advances in Signal Processing |
| Online Access: | http://dx.doi.org/10.1155/2010/830702 |
| _version_ | 1818068066744926208 |
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| author | Nemanja I. Petrović Vladimir Crnojević |
| author_facet | Nemanja I. Petrović Vladimir Crnojević |
| author_sort | Nemanja I. Petrović |
| collection | DOAJ |
| description | A novel method for impulse noise suppression in images, based on the pixel-wise S-estimator, is introduced. The S-estimator is an alternative for the well-known robust estimate of variance MAD, which does not require a location estimate and hence is more appropriate for asymmetric distributions, frequently encountered in transient regions of the image. The proposed computationally efficient modification of a robust S-estimator of variance is successfully utilized in iterative scheme for impulse noise filtering. Another novelty is that the proposed iterative algorithm has automatic stopping criteria, also based on the pixel-wise S-estimator. Performances of the proposed filter are independent of the image content or noise concentration. The proposed filter outperforms all state-of-the-art filters included in a large comparison, both objectively (in terms of PSNR and MSSIM) and subjectively. |
| first_indexed | 2024-12-10T15:33:40Z |
| format | Article |
| id | doaj.art-5acd99fc7e9f4518be3166817610a93b |
| institution | Directory Open Access Journal |
| issn | 1687-6172 1687-6180 |
| language | English |
| last_indexed | 2024-12-10T15:33:40Z |
| publishDate | 2010-01-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | EURASIP Journal on Advances in Signal Processing |
| spelling | doaj.art-5acd99fc7e9f4518be3166817610a93b2022-12-22T01:43:19ZengSpringerOpenEURASIP Journal on Advances in Signal Processing1687-61721687-61802010-01-01201010.1155/2010/830702Impulse Noise Filtering Using Robust Pixel-Wise S-Estimate of VarianceNemanja I. PetrovićVladimir CrnojevićA novel method for impulse noise suppression in images, based on the pixel-wise S-estimator, is introduced. The S-estimator is an alternative for the well-known robust estimate of variance MAD, which does not require a location estimate and hence is more appropriate for asymmetric distributions, frequently encountered in transient regions of the image. The proposed computationally efficient modification of a robust S-estimator of variance is successfully utilized in iterative scheme for impulse noise filtering. Another novelty is that the proposed iterative algorithm has automatic stopping criteria, also based on the pixel-wise S-estimator. Performances of the proposed filter are independent of the image content or noise concentration. The proposed filter outperforms all state-of-the-art filters included in a large comparison, both objectively (in terms of PSNR and MSSIM) and subjectively.http://dx.doi.org/10.1155/2010/830702 |
| spellingShingle | Nemanja I. Petrović Vladimir Crnojević Impulse Noise Filtering Using Robust Pixel-Wise S-Estimate of Variance EURASIP Journal on Advances in Signal Processing |
| title | Impulse Noise Filtering Using Robust Pixel-Wise S-Estimate of Variance |
| title_full | Impulse Noise Filtering Using Robust Pixel-Wise S-Estimate of Variance |
| title_fullStr | Impulse Noise Filtering Using Robust Pixel-Wise S-Estimate of Variance |
| title_full_unstemmed | Impulse Noise Filtering Using Robust Pixel-Wise S-Estimate of Variance |
| title_short | Impulse Noise Filtering Using Robust Pixel-Wise S-Estimate of Variance |
| title_sort | impulse noise filtering using robust pixel wise s estimate of variance |
| url | http://dx.doi.org/10.1155/2010/830702 |
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