基于小波变换的数字水印方案

Algorithm of Digital Watermarking based on wavelet transform

数字图像水印技术一般面临着两个方面的矛盾问题,就是水印算法的复杂度越高,一般对应的算法的鲁棒性越强。本文提出了一种数字水印方法,这种算法基于离散小波变换,为了提高算法的稳定性,确保水印的抗干扰能力,在编码时应用了纠错码技术。

Digital image watermarking technique faces with two questions,the complexity of the algorithm increase,the anti-jamming will strong.In this paper,an algorithm for digital image watermarking is proposed.The algorithm is based on discrete wavelet transform.In order to increase the stability and anti-jamming,error correction coding techniques are used to the algorithm.The algorithm is blind that is the watermarking is extracted without original image.Experimental results show that the algorithm decrease the complexity of the algorithm.