Image noise variance estimation using the mixed Lagrange time-delay autoregressive model
The mixed Lagrange time-delay estimation autoregressive (MLTDEAR) model is proposed as a solution to estimate image noise variance. The only information available to the proposed estimator is a corrupted image and the nature of additive white noise. The image autocorrelation function is calculated a...
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| Format: | Article |
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WILEY-LISS
2008
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| Online Access: | http://shdl.mmu.edu.my/2751/ |
| _version_ | 1848790139770241024 |
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| author | Sim, K.-S. Tso, C.-P. Law, K.-K. |
| author_facet | Sim, K.-S. Tso, C.-P. Law, K.-K. |
| author_sort | Sim, K.-S. |
| building | MMU Institutional Repository |
| collection | Online Access |
| description | The mixed Lagrange time-delay estimation autoregressive (MLTDEAR) model is proposed as a solution to estimate image noise variance. The only information available to the proposed estimator is a corrupted image and the nature of additive white noise. The image autocorrelation function is calculated and used to obtain the MLTDEAR model coefficients; the relationship between the MLTDEAR and linear prediction models is utilized to estimate the model coefficients. The forward-backward prediction is then used to obtain the predictor coefficients; the MLTDEAR model coefficients and prior samples of zero-offset autocorrelation values are next used to predict the power of the noise-free image. Furthermore, the fundamental performance limit of the signal and noise estimation, as derived from the Cramer-Rao inequality, is presented. |
| first_indexed | 2025-11-14T18:07:52Z |
| format | Article |
| id | mmu-2751 |
| institution | Multimedia University |
| institution_category | Local University |
| last_indexed | 2025-11-14T18:07:52Z |
| publishDate | 2008 |
| publisher | WILEY-LISS |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | mmu-27512011-09-13T03:56:31Z http://shdl.mmu.edu.my/2751/ Image noise variance estimation using the mixed Lagrange time-delay autoregressive model Sim, K.-S. Tso, C.-P. Law, K.-K. T Technology (General) QA75.5-76.95 Electronic computers. Computer science The mixed Lagrange time-delay estimation autoregressive (MLTDEAR) model is proposed as a solution to estimate image noise variance. The only information available to the proposed estimator is a corrupted image and the nature of additive white noise. The image autocorrelation function is calculated and used to obtain the MLTDEAR model coefficients; the relationship between the MLTDEAR and linear prediction models is utilized to estimate the model coefficients. The forward-backward prediction is then used to obtain the predictor coefficients; the MLTDEAR model coefficients and prior samples of zero-offset autocorrelation values are next used to predict the power of the noise-free image. Furthermore, the fundamental performance limit of the signal and noise estimation, as derived from the Cramer-Rao inequality, is presented. WILEY-LISS 2008-04 Article NonPeerReviewed Sim, K.-S. and Tso, C.-P. and Law, K.-K. (2008) Image noise variance estimation using the mixed Lagrange time-delay autoregressive model. Microscopy Research and Technique, 71 (4). pp. 315-324. ISSN 1059910X http://dx.doi.org/10.1002/jemt.20558 doi:10.1002/jemt.20558 doi:10.1002/jemt.20558 |
| spellingShingle | T Technology (General) QA75.5-76.95 Electronic computers. Computer science Sim, K.-S. Tso, C.-P. Law, K.-K. Image noise variance estimation using the mixed Lagrange time-delay autoregressive model |
| title | Image noise variance estimation using the mixed Lagrange time-delay autoregressive model |
| title_full | Image noise variance estimation using the mixed Lagrange time-delay autoregressive model |
| title_fullStr | Image noise variance estimation using the mixed Lagrange time-delay autoregressive model |
| title_full_unstemmed | Image noise variance estimation using the mixed Lagrange time-delay autoregressive model |
| title_short | Image noise variance estimation using the mixed Lagrange time-delay autoregressive model |
| title_sort | image noise variance estimation using the mixed lagrange time-delay autoregressive model |
| topic | T Technology (General) QA75.5-76.95 Electronic computers. Computer science |
| url | http://shdl.mmu.edu.my/2751/ http://shdl.mmu.edu.my/2751/ http://shdl.mmu.edu.my/2751/ |