This paper investigates a novel approach of digital image watermarking based on BCH error correction code in Discrete Cosine Transformation (DCT) domain. In the proposed technique, the watermark is encoded through BCH error correction code before embedding process, then it is embedded into the Discrete Cosine Transformation (DCT) coefficients of cover image. The proposed algorithm also employs lookup table method to find the best positions in the frequency domains for watermark insertion. The significant feature of this method is the reduction of time required in the process embedding of information, security and ability to correct the error caused by different attacks. Experimental results show the superiority of the proposed approach against the existing approaches.

中文翻译：

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DCT域中最优鲁棒图像水印的快速BCH编码

本文研究了一种在离散余弦变换 (DCT) 域中基于 BCH 纠错码的数字图像水印新方法。在所提出的技术中，水印在嵌入过程之前通过BCH纠错码进行编码，然后将其嵌入到覆盖图像的离散余弦变换（DCT）系数中。所提出的算法还采用查找表的方法在频域中寻找最佳位置进行水印插入。这种方法的显着特点是减少了信息嵌入过程所需的时间，安全性和纠正不同攻击引起的错误的能力。实验结果表明所提出的方法相对于现有方法的优越性。