On the Realization of Robust Watermarking System for Medical Images

被引：0
|
作者：
Parah, Shabir Ahmad [1 ]
Ahad, Farhana [1 ]
Sheikh, Javaid Ahmad [1 ]
Bhat, G. Mohiuddin [1 ]
机构：
[1] Univ Kashmir, Post Grad Dept Elect & IT, Srinagar, Jammu & Kashmir, India
来源：
2015 ANNUAL IEEE INDIA CONFERENCE (INDICON) | 2015年
关键词：
Discrete Wavelet Transform; Haar wavelet; Peak Signal to Noise Ratio; Bit Error Rate; Normalized Cross Corelation;
D O I：
暂无
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
A medical image watermarking system based on Discrete Wavelet Transform (DWT) has been presented in this paper. Before watermark embedding, a medical image is subjected to global DWT. Haar wavelet has been used for this purpose. The LH sub band has been divided into 8x8 blocks. The coefficients of each 8x8 (LH) block are compared and if necessary swapped to embed either binary digit '1' or '0'. The scheme has been evaluated using various image quality matrices like Peak Signal to Noise Ratio (PSNR), Structural Similarity Index (SSIM) Bit Error Rate (BER) and Normalized Cross Co-relation (NCC). It has been observed that the proposed technique is capable of producing high quality watermarked images, besides being more robust as indicated by comparison results.
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页数：5
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