2690-6791ISSN (Online)
2769-786XISSN (Print)
Volume 10 , Issue 1 , PP: 33-47, 2023 | Cite this article as | XML | Html | PDF | Full Length Article
Ashish Dixit 1 , R. P. Aggarwal 2 , B. K. Sharma 3 , Aditi Sharma 4 *
Doi: https://doi.org/10.54216/JISIoT.100103
Image watermarking preserves digital content. This study introduces a new watermarking approach employing Sub-Band Discrete Cosine Transform and Deep neural networks, GRNN and CNN. The method embeds robust, invisible watermarks in greyscale photos and compares the two neural network topologies. The watermark is added using sub-band DCT. Watermark embedding in low-frequency sub-bands resists photo processing. The binary watermark modifies sub-band DCT coefficients to determine embedding intensity, resisting signal deterioration, and assaults. GRNN and CNN neural networks extract watermarks accurately. CNN extracts hierarchical features from images, enabling robust watermark recovery even under distortions, whereas non-parametric GRNN stores the whole training data to create predictions. The watermarking approach is tested on several greyscale photos. PSNR, SSIM, MSE, and NCC measure performance. The watermark tests noise addition, compression, and filtering. Compare GRNN and CNN's watermark extraction strengths and shortcomings to assess image watermarking suitability.
Convolution Neural Network , General Regression Neural Network , Normalized Correlation , Discrete Cosine Transform.
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