دورية أكاديمية
A New Denoising System for SONAR Images
| العنوان: | A New Denoising System for SONAR Images |
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| المؤلفون: | Alexandru Isar, Sorin Moga, Dorina Isar |
| المصدر: | EURASIP Journal on Image and Video Processing, Vol 2009 (2009) |
| بيانات النشر: | SpringerOpen, 2009. |
| سنة النشر: | 2009 |
| المجموعة: | LCC:Electronics |
| مصطلحات موضوعية: | Electronics, TK7800-8360 |
| الوصف: | The SONAR images are perturbed by speckle noise. The use of speckle reduction filters is necessary to optimize the image exploitation procedures. This paper presents a new denoising method in the wavelet domain, which tends to reduce the speckle, preserving the structural features and textural information of the scene. Shift-invariance associated with good directional selectivity is important for the use of a wavelet transform (WT) in many fields of image processing. Generally, complex wavelet transforms, for example, the Double Tree Complex Wavelet Transform (DT-CWT) have these useful properties. In this paper, we propose the use of the DT-CWT in association with Maximum A Posteriori (MAP) filters. Such systems carry out different quality denoising in regions with different homogeneity degree. We propose a solution for the reduction of this unwanted effect based on diversity enhancement. The corresponding denoising algorithm is simple and fast. Some simulation results prove the performance obtained. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 1687-5176 1687-5281 |
| Relation: | https://doaj.org/toc/1687-5176; https://doaj.org/toc/1687-5281 |
| DOI: | 10.1155/2009/173841 |
| URL الوصول: | https://doaj.org/article/61ed1144c0e44d649536a76328a3bd8a |
| رقم الأكسشن: | edsdoj.61ed1144c0e44d649536a76328a3bd8a |
| قاعدة البيانات: | Directory of Open Access Journals |
Find this article in full text from Springer Verlag. 
Full Text Finder | تدمد: | 16875176 16875281 |
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| DOI: | 10.1155/2009/173841 |