Enhancing Colour Image Watermarking using DWT and Schur for Robust Copyright Protection
Isha Jasani, Umang P. Patel, Nilesh Kumar Dubey, Hardikkumar Sudhirbhai Jayswal · 2024
Copyright protection is crucial in the digital age to protect creators' intellectual property rights. With the ease of copying and distributing digital content, creators face the risk of their works being used without permission. Advanced non-blind image watermarking techniques can mitigate these risks. Schur decomposition is used to decompose the image matrix, allowing for robust embedding. By leveraging the YCbCr colour channel, the watermark can keebe embedded in the luminance component (Y), preserving the image quality., while a 2-level Discrete The Wavelet Transform (DWT) breaks down a picture into distinct frequency bands to improve its imperceptibility and ability to withstand attacks. The Arnold transform scrambles the watermark, enhancing security. This combination ensures robust, imperceptible, and secure watermarks, protecting creators' rights while maintaining their work's integrity and value.