面向便携式设备的数字水印检测方法

Digital Watermark Detection Method for Portable Device

中文关键词: 数字水印  便携式设备  离散小波变换  奇异值分解

英文关键词: digital watermark  portable device  discrete wavelet transform  singular value decomposition

中文摘要:

      目的 为了适应便携式数字水印检测时高抗打印拍照扫描及低算法复杂度的要求，提出一种基于ARM系统与基于离散小波变换和矩阵奇异值分解的数字水印算法相结合的便携式数字水印检测方法。方法 在基于ARM便携式系统中，通过图像采集模块读取含水印图片信息，利用DWT-SVD数字水印算法进行水印检测，并在LCD上显示检测结果。结果 基于ARM处理器的便携式设备，能够准确地检测出水印信息，提取水印NC值可达到0.7。结论 该方法具有较好的抗打印拍照性能，且计算复杂度低，能够应用于携式数字水印检测设备。

英文摘要:

      The work aims to a portable digital watermark detection method based on ARM system and singular value decomposition according to discrete wavelet transform and matrix, so as to meet the requirements of high anti-print photo-scanning and low algorithm complexity in portable digital watermark detection. In ARM-based portable system, image acquisition module was used to read watermark image information, DWT-SVD digital watermark algorithm was applied to detect watermark, and detection results were displayed on LCD. The portable device based on ARM processor could accurately detect watermark information, and extract the NC value of watermark of 0.7. The method has good anti-printing and photo-taking performance and low computational complexity, and can be applied to portable digital watermarking detection equipment.