Abstract:In order to improve the security of traditional digital image watermarking algorithm, and solve the problem of digital watermark is sensitive to signal processing and geometric distortion. A new digital watermarking algorithm combined with singular value decomposition and wavelet transform is proposed. Unlike the common wavelet based watermarking techniques, the proposed scheme lies essentially on marking the approximation and diagonal bands of the discrete wavelet transform (DWT) of the cover image achieving a better compromise between fidelity and robustness. The examination algorithm of watermark used the double watermark comparison examination. Experiments show that our contributions provide the multiple watermarking schemes with robustness to a wide variety of attacks.