基于提升格式小波变换的彩色数字水印技术

True color image digital watermark technique based on lifting scheme wavelet transform

目的通过二维彩色数字水印的嵌入,实现数字版权保护。方法针对传统数字水印技术的有限性,通过对频域数字水印算法进行分析,提出了一种新的数字水印算法。新算法以提升格式小波变换为基础,对原始图像和水印图像进行提升格式小波变换。结果实现了将二维彩色图像作为水印信息嵌入到二维图像数据中。结论实验证明,新算法在对彩色图像进行水印处理方面达到较好的效果,具有较好的健壮性。

Aim Through embedding 2D true color images as watermark information into the 2D color images to protect digital copyright. Methods Owing to the shortcomings of the traditional digital watermark techniques, analyze the frequency domain watermark algorithm, propose a new digital watermark method. The new method based on lifting scheme wavelet transform makes the watermark information embedded into intermediate frequency. Results Accomplishing embedment of 2D true color images as watermark information into the 2D color images. Conclusion Experimental results show that the new method has an excellent effect in 2D true color images digital watermark processing. The experimental results also demonstrate that the new method has an good robust evaluation.