Robust and distortion control dual watermarking in LWT domain using DCT and error correction code for color medical image

• Published in: Multimedia tools and applications Vol. 78; no. 21; pp. 30523 - 30533
• Main Author: Singh, A. K.
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.11.2019; Springer Nature B.V
• Subjects: Coding; Computer Communication Networks; Computer Science; Data Structures and Information Theory; Discrete cosine transform; Distortion; Error correcting codes; Error correction; Error correction & detection; Medical imaging; Multimedia Information Systems; Robust control; Robustness (mathematics); Special Purpose and Application-Based Systems; Watermarking; Wavelet transforms; LWT; Robustness; DCT; BCH; MD5; Complexity
• ISSN: 1380-7501; 1573-7721
• DOI: 10.1007/s11042-018-7115-x

This paper presents lifting wavelet transform (LWT) and discrete cosine transform (DCT) based robust watermarking approach for tele-health applications. For identity authentication, ‘signature watermark’ of size ‘64 × 64’ and ‘patient report’ of size ‘80’ characters are hiding into the host medical image. Further, the signature watermark is encrypted by message-digest (MD5) and ‘patient report’ is encoded by BCH error correcting code before embedding into the host image. Experimental demonstrations indicate that the method provides sufficient robustness and security against various attacks without significant distortion between cover and watermarked image. Further, our results proved that the method offer NC value more than 0.9214 for most of the considered attacks. Furthermore, it is evident from results our method shows the improvement in robustness to previously reported techniques under consideration while providing low computational complexity.