Robust Digital Watermarking: A Review of Techniques and Performance

Abstract -Watermarking constitutes a method employed to discreetly integrate concealed information or metadata without causing substantial degradation in content quality. This concealed information, referred to as a "watermark" serves multiple purposes, encompassing copyright protection, authentication, and detection of tampering. It is extensively utilized in industries like photography, publishing, and entertainment to dissuade unauthorized reproduction and distribution of digital media. In essence, watermarking is a technique entailing the incorporation of concealed information within digital media to safeguard intellectual property, establish authenticity, and facilitate content tracking, all without significantly compromising the quality of the media. It stands as a valuable tool for protecting digital assets and upholding content integrity in the contemporary digital landscape. Key Words:Copyright Protection, DCT (Discrete Wavelet Transform), DFT (Discrete Fourier Transform), DWT (Discrete Wavelet Transform), IWT (Integer Wavelet Transform), Scrambling.