Title :
On the realization of robust watermarking system for medical images
Author :
Shabir Ahmad Parah;Farhana Ahad;Javaid Ahmad Sheikh;G. Mohiuddin Bhat
Author_Institution :
Post Graduate Department of Electronics & IT, University of Kashmir, Srinagar, India
Abstract :
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 8×8 blocks. The coefficients of each 8×8 (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.
Keywords :
"Watermarking","Biomedical imaging","Bit error rate","Robustness","Computed tomography","Magnetic resonance imaging","Discrete wavelet transforms"
Conference_Titel :
India Conference (INDICON), 2015 Annual IEEE
Electronic_ISBN :
2325-9418
DOI :
10.1109/INDICON.2015.7443363
