基于Bayes決策的組合中值濾波
COMBINATION MEDIAN FILTER BASED ON BAYES-DECISION
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摘要: 針對圖象濾波中的濾噪和細(xì)節(jié)保護的矛盾,提出了基于Bayes決策的組合中值濾波技術(shù)。內(nèi)容有:(1)導(dǎo)出了測試向量的聯(lián)合分布密度函數(shù);(2)提出了先驗概率的一種估計算法,該算法具有一定的普遍應(yīng)用意義;(3)基于Bayes決策,將標(biāo)準(zhǔn)中值濾波器(MF)和多級中值濾波器(MLM)組合應(yīng)用,給出一種效果優(yōu)良的組合中值濾波器結(jié)構(gòu)。
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關(guān)鍵詞:
- 圖象處理; 中值濾波; Bayes決策; 順序統(tǒng)計
Abstract: To settle the contradiction of noise-filtering and image detail-preserving in image filtering, a combination median filter based on Bayes-decision is proposed. The main contributions are: (1) deriving the union conditional density function of a defined test vector; (2) giving an algorithm for estimating pre-probability; (3) introducing a new filter structure, which combining median and multistage median filters based on Bayes-decision. -
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