基于DCT的二值图块数字水印算法

DCT-Based Graphics Block Watermarking Technique

该文提出一种数字水印的生成、管理及检测算法,利用水印控制码对生成的数字水印图象加以控制,产生8*8的小图块,每一块只可选两种颜色之一,在检测时充分利用该特性,使检测结果准确,实现简单,具有较强的抗JPEG压缩鲁棒性。

An algorithm, which may produce, manage and detect watermark, is presented in this paper. Using control code of watermark, the algorithm controls digital watermark image and produces 8×8 blocks of image. Moreover, either of two colors can be selected, and consequently, the detection result of watermark is more accurate, the implementation of the algorithm is simple, and the algorithm robust to reject JPEG compression.