Secure Spread-Spectrum Watermarking for Telemedicine Applications  

作　　者：Basant Kumar Harsh Vikram Singh Surya Pal Singh Anand Mohan 

机构地区：[1]不详

出　　处：《Journal of Information Security》2011年第2期91-98,共8页信息安全（英文）

摘　　要：This paper presents a secure spread-spectrum watermarking algorithm for digital images in discrete wavelet transform (DWT) domain. The algorithm is applied for embedding watermarks like patient identification /source identification or doctors signature in binary image format into host digital radiological image for potential telemedicine applications. Performance of the algorithm is analysed by varying the gain factor, subband decomposition levels, size of watermark, wavelet filters and medical image modalities. Simulation results show that the proposed method achieves higher security and robustness against various attacks.This paper presents a secure spread-spectrum watermarking algorithm for digital images in discrete wavelet transform (DWT) domain. The algorithm is applied for embedding watermarks like patient identification /source identification or doctors signature in binary image format into host digital radiological image for potential telemedicine applications. Performance of the algorithm is analysed by varying the gain factor, subband decomposition levels, size of watermark, wavelet filters and medical image modalities. Simulation results show that the proposed method achieves higher security and robustness against various attacks.

关 键 词：WATERMARKING SPREAD-SPECTRUM Discrete WAVELET TRANSFORM TELEMEDICINE 

分 类 号：TP39[自动化与计算机技术—计算机应用技术]