计算机应用与软件Issue(9)：128-130,140,4.DOI:10.3969/j.issn.1000-386x.2013.09.036
基于图像特征和霍夫曼编码的图像水印算法
IMAGE WATERMARKING ALGORITHM BASED ON IMAGE CHARACTERISTICS AND HUFFMAN CODING
摘要
Abstract
In this paper we introduce Huffman coding principle to digital watermarking field , and present a new image watermarking algorithm which is based on image characteristics to reduce the complexity of digital watermarking algorithm .When embedding the watermark , the algorithm conducts 3-level wavelet decomposition on the digital image first , and extracts the edge characteristics of the 3-level approximation components.Then it uses Huffman coding to calculate the vertex nodes of edge characteristics matrix , after that, it embeds the nodes into the detailed components .Finally, 3-level inverse wavelet transform is carried out to get the image with the watermark embedded . When extracting watermark , the algorithm finds the embedding point according to the process of watermark embedding , extracts the watermark from the detecting image , and analyses the detected result .Simulation experiments show that the algorithm has low complexity and small load , and has excellent effectiveness and feasibility .关键词
数字水印/图像特征/霍夫曼编码/边缘特征/小波变换Key words
Digital watermark/Image characteristics/Huffman coding/Edge characteristic/DWT分类
信息技术与安全科学引用本文复制引用
李亚琴,李金祥,梁颖红..基于图像特征和霍夫曼编码的图像水印算法[J].计算机应用与软件,2013,(9):128-130,140,4.基金项目
江苏省普通高等学校科研成果产业化推进项目（JH09-46）；江苏省现代企业信息化应用支撑软件工程技术研发中心开放基金项目（SX201105）；苏州市职业大学创新基金项目（2010SZDCC03）；2010苏州市职业大学创新团队项目（3100124）。 （）
