基于图像插值的可逆水印算法研究

Research on Reversible Watermarking Algorithm Based on Image Interpolation

可逆数字水印技术目前广泛应用在医学、遥感等多个领域,而现有的可逆水印算法大多是依托附加信息的,对嵌入容量影响较大.基于图像插值提出了一种无附加信息的可逆水印算法,在研究插值图像可逆原理的基础上,探讨了水印的嵌入、提取以及载体还原技术,最后进行实验模拟和结果分析.结果表明,基于图像插值的可逆水印算法具有较高的安全性、较好的隐蔽性、较高的嵌入率以及较强的实用性.

Reversible digital watermarking technology is widely used in many fields such as medicine, remote sensing and so on. The existing reversible watermarking algorithms are mostly based on additional information, which has a great impact on the embedding capacity. There- fore, a reversible watermarking algorithm without additional information is proposed based on image interpolation in this paper. Based on the study of the reversible principle of interpolation image, the watermark embedding, extraction and carrier reduction technology are discussed. Finally, the experimental simulation and results analysis are carried out. The results show that the reversible watermarking algorithm based on image interpolation has high security, good con- cealment, high embedding rate and strong practicability.