A Robust Color Image Watermarking Based on SVD and DWT (original) (raw)

A robust color image watermarking based on DWT – SVD (Singular value decomposition) is proposed. Firstly, color image is transformed to YUV from RGB spatial domain. Luminance component Y is performed DWT and then singular value decomposition is applied to obtain singular values. Arnold transform and DWT are performed for the gray watermarks. Watermark is embedded into singular values, which are all from frequency bands of the last two layers. Watermark can be extracted from all attack images in the stirmark benchmark. The robustness can be reflected by experimental results in this algorithm.