摘要： 利用变换域水印技术对诸如压缩、滤波等信号处理具有较好鲁棒性的优点,结合空域中对几何变换具有抵抗力的常量来构造与检测零水印。实验证明,方案对剪切、数模转换处理、滤波、噪声、JPEG压缩、旋转等图像处理具有较强的鲁棒性。

关键词: 数字图像, 零水印, 二次检测, 重同步, corner中心角

Abstract: The main idea in this scheme is to take the advantage of the techniques of both spatial and transform domain in order to achieve a robust zero-watermark scheme with robustness against image processing and geometric transformations. Under the condition of avoiding the contradiction between robustness and imperceptibility, the robustness of the watermarky is improved furtherly The presented schema has been evaluated experimentally. The obtained results show that the technique is resilient to most common attacks including cropping, DA translation, noise perturbation, JPEG compression and rotation.

中图分类号: 

• TP309