| Digital Rights Management (DRM) Development: A Blind Watermarking Strategy for Digital Image Protection | |
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MSRDG International Journal of Computer Scientific Technology & Electronics Engineering
© 2025 by MSRDG IJCSTEE Journal Volume 1 Issue 2 Year of Publication: 2025 |
Paper Download Article ID MSRDG-IJCSTEE-V1I2P104 |
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Abstract: The rapid proliferation of digital imagery across open networks has intensified concerns regarding unauthorized reproduction, intellectual property violations, and the inadequacy of conventional access-control mechanisms. Digital Rights Management (DRM) systems demand robust, imperceptible, and recoverable ownership markers that survive a wide spectrum of signal-processing and geometric distortions. This paper presents a novel blind watermarking framework that fuses two-level Discrete Wavelet Transform (DWT) decomposition with Singular Value Decomposition (SVD) applied to the low-frequency LL sub-band, augmented by Arnold chaotic scrambling for enhanced security. Ownership data is embedded by perturbing the singular values of the host sub-band matrix in proportion to the scrambled watermark, governed by an adaptively selected embedding-strength parameter α. Because the scheme encodes ownership information solely into the singular-value domain, the original image is not required during extraction, satisfying the blind-watermarking criterion. Exhaustive experimentation across standard 512×512 grayscale benchmarks — Lena, Baboon, Pepper, and Cameraman — demonstrates Peak Signal-to-Noise Ratios (PSNR) exceeding 41 dB at α = 0.10, Structural Similarity Index Measure (SSIM) values above 0.97, and Normalized Correlation (NC) coefficients consistently above 0.96 after JPEG compression, additive Gaussian noise, median filtering, rotation, scaling, and cropping attacks. Comparative analysis against contemporary DWT-only and LSB-based schemes confirms the superiority of the proposed method in both imperceptibility and robustness. The framework provides a scalable and computationally efficient DRM solution suitable for deployment in cloud media archives and e-commerce content delivery systems. |
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| Keywords: Digital watermarking · DRM · Discrete Wavelet Transform · Singular Value Decomposition · Arnold transform · Blind watermarking · Copyright protection · Image imperceptibility | |
