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基于MDCT的數(shù)字水印算法在醫(yī)學(xué)圖像中的應(yīng)用研究

Research on application of MDCT-based digital watermarking algorithm in medical image

作者: 朱振國(guó)  陳功  舒華忠 
單位:江蘇省中醫(yī)院信息工程部(南京210029)
關(guān)鍵詞: 醫(yī)學(xué)圖像;數(shù)字水印;MDCT;量化;魯棒性 
分類號(hào):
出版年·卷·期(頁(yè)碼):2013·32·5(524-527)
摘要:

目的 防止醫(yī)學(xué)圖像被非法篡改和拷貝,提高醫(yī)學(xué)數(shù)字圖像在網(wǎng)絡(luò)傳輸過程中的安全性,保護(hù)版權(quán)。方法 基于MDCT算法和量化方法,在圖像中嵌入和提取數(shù)字水印,計(jì)算相關(guān)性,并進(jìn)行各種攻擊性測(cè)試。結(jié)果 嵌入水印后的圖像視覺效果無差別,并能抵御常規(guī)攻擊。結(jié)論 說明本文算法在保持圖像視覺質(zhì)量的同時(shí),也具備較好的魯棒性。

Objective To prevent image being illegal tampered with and copied in order to improve the safety in the network transmission.Methods We embed and propose watermarking based on quantization in the MDCT domain,and do some attack tests.Results The embedded image has no difference in visual effects and can defend attacks.Conclusions The proposed method can maintain good visual quality and is robust to some attacks.

參考文獻(xiàn):

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