摘要
在分析基于二维条码图像图形空间结构的水印嵌入方法基础上,阐述了该方法存在"算法略显繁冗"和"算法结束条件的判断不够清晰"等问题.根据工程实现的具体要求,提出了对该算法的改进方法,并加以具体实现.此方法在二维条码中嵌入水印信息,并引入加密方法,进一步提高了水印嵌入的安全性.结果表明,该方法可以在不影响识读条件下,有效地嵌入较多水印信息.
By analyzing the embedded watermark based on 2-D barcode image space structure,the paper reveals the drawbacks of the method as "cumbersome algorithm","indecisive judgment for terminating conditions of algorithm" and others.To meet the need of engineering,the paper puts forth an improved algorithm by embedding watermark in 2-D barcode and encrypting the information to ensure security.Results show that more watermark information can be effectively embedded without interfering with the original reading.
出处
《北方工业大学学报》
2010年第3期5-9,共5页
Journal of North China University of Technology
基金
国家自然科学基金项目(No.10771002
No.60835003)
北京市人才强教深化计划项目(PHR201007118)资助
关键词
二维条码
数字水印
空间域
2-D barcode
watermarking
spatial structure