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基于MDCT的数字水印算法在医学图像中的应用研究

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

作者: 朱振国  陈功  舒华忠 
单位:江苏省中医院信息工程部(南京210029)
关键词: 医学图像;数字水印;MDCT;量化;鲁棒性 
分类号:
出版年·卷·期(页码):2013·32·5(524-527)
摘要:

目的 防止医学图像被非法篡改和拷贝,提高医学数字图像在网络传输过程中的安全性,保护版权。方法 基于MDCT算法和量化方法,在图像中嵌入和提取数字水印,计算相关性,并进行各种攻击性测试。结果 嵌入水印后的图像视觉效果无差别,并能抵御常规攻击。结论 说明本文算法在保持图像视觉质量的同时,也具备较好的鲁棒性。

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.

参考文献:

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