講演抄録/キーワード |
講演名 |
2008-01-26 09:30
Medical Image Noise Suppression
-- Using Mediated Morphology -- ○Mahdi Khosravy・Mohammad Reza Asharif(Univ. of Ryukyus)・Mohammad Hossein Sedaaghi(Sahand Univ. of Tech.) MI2007-111 |
抄録 |
(和) |
This paper introduces superior ability of mediated morphology in suppression of normal noise and its great unique ability in suppression of high density Gaussian and Salt & Pepper noises from medical images. The proposed morphological filter is based on mediated morphology, that its main operators are composed of a particular internal combination of Classical morphological operators and median operator. The mediated Morphological algorithm has been compared with classical Morphological filter, Weighted Morphological filter and linear averaging filter by applying over MRI images contaminated with three different types of noise; Salt & pepper, Speckle and Gaussian. Accurate Numerical descriptions convey that the proposed filter dominate all others, in different levels of noise. This dominance becomes more evident in high levels of noise. While due to increase of the noise level, the other filters gradually become useless, Mediated Morphological filter has still its effect. Furthermore as another advantage, it is not almost influenced by density of Salt & Pepper noise as well as variance of Gaussian noise. |
(英) |
This paper introduces superior ability of mediated morphology in suppression of normal noise and its great unique ability in suppression of high density Gaussian and Salt & Pepper noises from medical images. The proposed morphological filter is based on mediated morphology, that its main operators are composed of a particular internal combination of Classical morphological operators and median operator. The mediated Morphological algorithm has been compared with classical Morphological filter, Weighted Morphological filter and linear averaging filter by applying over MRI images contaminated with three different types of noise; Salt & pepper, Speckle and Gaussian. Accurate Numerical descriptions convey that the proposed filter dominate all others, in different levels of noise. This dominance becomes more evident in high levels of noise. While due to increase of the noise level, the other filters gradually become useless, Mediated Morphological filter has still its effect. Furthermore as another advantage, it is not almost influenced by density of Salt & Pepper noise as well as variance of Gaussian noise. |
キーワード |
(和) |
Morphological filters / Mediated Morphology / Nonlinear Filtering / Structuring Element / Image enhancement / / / |
(英) |
Morphological filters / Mediated Morphology / Nonlinear Filtering / Structuring Element / Image enhancement / / / |
文献情報 |
信学技報, vol. 107, no. 461, MI2007-111, pp. 265-270, 2008年1月. |
資料番号 |
MI2007-111 |
発行日 |
2008-01-18 (MI) |
ISSN |
Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 |
著作権に ついて |
技術研究報告に掲載された論文の著作権は電子情報通信学会に帰属します.(許諾番号:10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) |
PDFダウンロード |
MI2007-111 |