摘要： 从基于标识性鲁棒水印出发，提出了一种脆弱性防篡改盲数字水印算法，即任意选择3个亮度DCT系数嵌入水印信息。在试验结果里，通过对嵌入水印后的图像进行直接提取水印图像，从而验证了水印算法的可行性。再分别进行局部修改和做另存为处理后提取水印图像，从而验证了该水印算法的脆弱性。试验表明，该水印算法有很好的隐蔽性和脆弱性。
关键词:
脆弱性盲数字水印,
JPEG,
DCT
Abstract: This paper brings forward a frangibility blind digital watermark algorithm based on mark strong watermark. It selects three luminance DCT coefficients at random, then embeds watermark information. The result of experiment validates the feasibility of watermark algorithm via distilling the watermark picture directly from the picture embedded in watermark. And also validates the frangibility of watermark algorithm via locally modifying and saving as the picture embedded in watermark. Experimentation shows that this watermark algorithm has good concealmeat and frangibility.
Key words:
Frangibility blind digital watermark,
JPEG,
DCT
魏永超;苏显渝;郭晓东;吕清仁. 基于DCT和JPEG的脆弱性盲数字水印算法[J]. 计算机工程, 2007, 33(04): 152-153.
WEI Yongchao; SU Xianyu; GUO Xiaodong; LV Qingren. Frangibility Blind Watermark Algorithm Based on DCT and JPEG[J]. Computer Engineering, 2007, 33(04): 152-153.