基于低密度校验码的数字水印研究

Study of Watermark Based on LDPC

鲁棒性是数字水印的重要指标之一,文章提出将LDPC编码的数字水印应用于数字版权保护中,利用LDPC纠正水印误码来降低检测误码率,提高水印受到攻击的鲁棒性。实验结果表明,数字水印图像对具有高斯白噪声的攻击具有很强的鲁棒性。

Robustness is one of the important requirements of digital watermark. To improve the robustness of watermark, LDPC can be applied in watermarking, intending to lower the detection error rate. The conclusions are demonstrated by the experiment results.