Novel Digital Image Watermarking Algorithm Combining Discrete Wavelet Transform (DWT) and Singular Value Decomposition (SVD)

A new digital image watermarking algorithm is proposed that integrates Discrete Wavelet Transform (DWT) with Singular Value Decomposition (SVD). The algorithm performs wavelet decomposition on the original image, partitions the low-frequency subband obtained from decomposition, and applies SVD to each block. The largest singular value from each block is selected to embed Arnold-scrambled watermark information through quantization.