A novel public digital watermark algorithm based on image energy and quantization is proposed. 提出了一个新的基于图像能量和量化的公开数字水印(WMK)算法。
But in watermarking system, the main aim of source coding is watermark shaping. 但在水印(WMK)系统中,信源编码的主要目的是水印(WMK)整形。
Two chaotic sequences are modulated according characters of chaotic system, using for watermark encryption and sub image extraction. 利用混沌系统的特点调制了两种不同的混沌序列,分别用于水印(WMK)加密和子图像的抽取。
The digital watermark technique is proposed based on Fresnel hologram and Discrete Cosine Transform. 提出了一种基于数字菲涅耳全息和离散余弦变换的数字水印(WMK)技术。
Experimental results show that embedded watermark has a certain capacity and robustness. 试验结果和剖析表明嵌入的水印(WMK)具备很好的不可见性和鲁棒性。