Luong, Quang Hai and Tran, Duc Tan and Nguyen, Linh Trung and Huynh, Huu Tue (2016) Estimation of elasticity and viscosity in heterogeneous medium using FDTD method and AHI algorithm. In: 9th International Conference on Advanced Technologies for Communications (ATC), 12-14 October 2016, Hanoi, Vietnam.
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Abstract
In this paper we present an efficient examplebased method for Gaussian denoising of CT images. In the proposed method, an image is considered as a sum of the three frequency bands: low-band, middle-band and high-band. We assume that the noise component is often mixed into the middleband and the high-band in order to better preserve the highfrequency details in the image we perform denoising on these two bands. The method is based on a sparse representation model in which a set of standard images is used to construct the example dictionaries. The experimental results demonstrate that the proposed denoising method can preserve well the highfrequency details. The objective and subjective comparisons also show that the proposed our method outperforms other state-of-the-art denoising methods.
| Item Type: | Conference or Workshop Item (Lecture) |
|---|---|
| Subjects: | Electronics and Communications |
| Divisions: | Faculty of Electronics and Telecommunications (FET) |
| Depositing User: | A/Prof. Linh Trung Nguyen |
| Date Deposited: | 08 Dec 2016 16:53 |
| Last Modified: | 08 Dec 2016 16:54 |
| URI: | http://eprints.uet.vnu.edu.vn/eprints/id/eprint/2189 |
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