%0 Conference Paper
%A Trinh, Dinh Hoan
%A Nguyen, Thanh Trung
%A Nguyen, Linh Trung
%B The 7th International Conference on Advanced Technologies for Communications (ATC 2014)
%C Hanoi, Vietnam
%D 2014
%F SisLab:1200
%K Gaussian noise;Markov processes;computerised tomography;image denoising;medical image processing;CT images;Gaussian denoising;Markov random field;example-based denoising method;high-frequency band;patch pairs;Biomedical imaging;Computed tomography;Databases;Image denoising;Noise;Noise measurement;Noise reduction
%P 355-359
%T An Effective Example-based Denoising Method for CT Images using Markov Random Field
%U https://eprints.uet.vnu.edu.vn/eprints/id/eprint/1200/
%X We propose in this paper a novel example-based method for Gaussian denoising of CT images. In the proposed method, denoising is performed with the help of a set of example CT images. We construct, from the example images, a database consisting of high and low-frequency patch pairs and then use the Markov random field to denoise. The proposed denoising method can restore the high-frequency band that is often lost by the traditional noise-filters. Moreover, it is very effective for images corrupted by heavy noise. Experimental results also show that the proposed method outperforms other state-of-the-art denoising methods both in the objective and subjective evaluations.