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題名 | 可移除脈衝雜訊的高成效距離矩陣濾波器=A Highly Effective Distance-Matrix Filter for Removing Impulse Noise |
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作者 | 陳永昇; 張凱育; 劉遠楨; |
期刊 | 資訊科學應用期刊 |
出版日期 | 20090600 |
卷期 | 5:1 2009.06[民98.06] |
頁次 | 頁63-80 |
分類號 | 448.533 |
語文 | chi |
關鍵詞 | 中值濾波器; 平滑濾波器; 脈衝雜訊; 影像修復; 脈衝雜訊偵測; Median filter; Mean filter; Impulse noise; Image restoration; Impulse detection; |
中文摘要 | 本論文提出了一個可移除脈衝雜訊的高成效距離矩陣濾波器(A Highly Effective Distance-Matrix Filter for Removing Impulse Noise, DMF),主要目的是對影像在遭受脈衝雜訊攻擊時,藉由固定式脈衝雜訊的偵測與驗證及隨機脈衝雜訊的偵測與驗證,來針對雜訊點加以修復。所提的方法共分為兩個階段,分別為偵測階段與修復階段;而偵測階段又可分為兩個部份,分別為固定式脈衝雜訊的偵測與隨機脈衝雜訊的偵測。在修復階段,分為圖像邊緣與非邊緣兩部份來處理,在邊緣的部份,採用的是平滑濾波器來進行修復,在非邊緣的部份,則採用中值濾波器來進行修復。實驗結果證明,本論文所提出的方法,對影像在受20%以上固定式脈衝雜訊或20%以下隨機雜訊的攻擊時,都較其它相關的方法有較好的修復結果。 |
英文摘要 | In this study, a highly effective distance-matrix filter (DMF) for restoring the images corrupted by impulse noise is presented. The main propose of this study is to reconstruct the corrupted image that is attacked by impulse noise. The proposed mechanism can detect the noise caused by constant value impulse and random value impulse, and then remove the noise so as to restore the image. This proposed mechanism consists of two phases: the noise detection phase and the image restoration phase. The noise detection phase is further divided into two stages: the constant value impulse detection stage, and the random value impulse detection stage. As for image restoration, different impulse noise removing mechanisms are performed for different parts of the image: one is for removing the noise at the image edges and the other is for removing the noise not at the image edges. The median filter is applied to the former, and the smooth filter is applied to the latter. This experimental results show that the proposed mechanism has higher effects than all the other existing works on restoring the image that is corrupted by more than 20% constant value impulse noise or less than 20% random value impulse noise. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。