【摘要】 鲁棒性是数字水印的重要指标之一,提出将准循环LDPC码的前向纠错技术应用于数字版权的保护中,利用准循环LDPC码较强的前向纠错能力,来提高数字水印的鲁棒性。实验结果表明,经准循环LDPC码编码后的数字水印应用于数字水印技术中,水印图像的鲁棒性得到了极大的提高,且经JPEG压缩后,图像水印也能较好地恢复出来。更多还原

【Abstract】 Robustness is one of the important requirements of digital watermarking system.The paper proposes to improve the robustness of watermark and protect the copyright of digital works,forward error correction based on QC-LDPC code can be applied in watermarking,intending to lower the detection error rate.The conclusions are demonstrated by experiment results.更多还原