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。
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.
作者
曾台英
余正轩
ZENG Tai-ying;YU Zheng-xuan(University of Shanghai for Science and Technology,Shanghai 200093,China)
出处
《包装工程》
CAS
北大核心
2019年第5期277-282,共6页
Packaging Engineering
关键词
数字水印
便携式设备
离散小波变换
奇异值分解
digital watermark
portable device
discrete wavelet transform
singular value decomposition
