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- Title
An Optimal and Hybrid Encryption-based Integer Wavelet Transform with DCT for Color Image Watermarking.
- Authors
Juvvanapudi, Sharon Rose Victor; Kumar, P. Rajesh; Reddy, K. V. V. Satyanarayana
- Abstract
This article introduces the hybrid encryption (HE)-based CIW using combined integer wavelet transform (IWT) with discrete cosine transform (DCT), where the HE performs on watermark image to encrypt the data securely before embedding it into cover image while both IWT, and DCT are used to extract the features from cover RGB image. In addition, the grey-wolf optimization (GWO) is employed for extracting the enhanced features obtained from IWTDCT. Then, LSB approach is employed for embedding the encrypted watermark image into the cover image, here after the proposed method is denoted as OHE-based IWT-DCT with LSB. Finally, the watermarked image is obtained using inverse transforms of IWT, and DCT with postprocessing operations. The simulations carried out on standard test images discloses the superiority of proposed OHE-based IWT-DCT with LSB approach as compared to stateof-art CIW approaches in terms of peak signal-to-noise ratio (PSNR), structural similarity (SSIM) index, mean square error (MSE), normalized cross correlation (NCC) and unified averaged changed intensity (UACI) values.
- Subjects
IMAGE encryption; WAVELET transforms; DISCRETE cosine transforms; DIGITAL watermarking; INTEGERS; FEATURE extraction
- Publication
Turkish Online Journal of Qualitative Inquiry, 2021, Vol 12, Issue 5, p5029
- ISSN
1309-6591
- Publication type
Article