中文摘要：

互联网的发展使得多媒体的版权保护成为亟待解决的问题，从而使得用于图像内容认证的哈希方法得到广泛的研究和应用。提出了一种新的基于V系统的图像哈希方法，该方法首先将原始图像强化，然后提取V变换域上的系数生成哈希值。实验结果显示，该方法能够抵抗滤波、噪声、25％以下的裁剪和95％以下的JPEG压缩等攻击，有很好的安全性和鲁棒性。

英文摘要：

With the development of Internet, the issue of multimedia copyright protection becomes urgent day and day, making the image hashing for image authentication obtaining extensive research and application. This paper proposed a novel image hashing scheme based on V-system. It first modulated the image pixels to get a intensity-transformed version, then extracted coefficients after V transform to generate the hash value. The experimental results demonstrate that the scheme has a good performance against attacks.