计算机工程与应用Issue(23)：162-165,4.DOI:10.3778/j.issn.1002-8331.1202-0161
医学图像可逆数字水印防溢出处理研究
Study on preventing overflow and underflow of reversible digital watermarking for medical images
摘要
Abstract
In order to effectively solve the overflow and underflow problems during watermark embedding for medical images, three common methods of preventing overflow and underflow mentioned in literatures, including module-256, location map and histogram narrowing have been tested. The experimental results give the effects brought by different three methods to reversible watermarking with respect to several aspects including embedding capacity and image quality and demonstrate the priority of histogram narrowing method. Analyses show the preventing overflow and underflow algorithm is the key step to ensure the per-formance of lossless watermarking, and its choice depends not only on the specific reversible watermarking approach but also on image’s different modality specificities.关键词
医学图像/可逆水印/上溢/下溢/直方图Key words
medical image/reversible watermarking/overflow/underflow/histogram分类
信息技术与安全科学引用本文复制引用
邓小鸿,陈志刚,刘惠文,翦鹏..医学图像可逆数字水印防溢出处理研究[J].计算机工程与应用,2013,(23):162-165,4.基金项目
国家自然科学基金（No.60903058）；湖南省科技厅重点科研（No.2010TP1001）；江西理工大学科研（No.jxxj11168）。 （）
