SVG在数字水印中的应用

Digital watermarking with SVG

在网络技术高速发展的今天,矢量图形的使用越来越广泛。接着就是矢量图形版权保护的问题,目前使用于图像版权保护的一个主要手段就是数字水印技术。可是现在使用数字水印技术的大部分算法仅仅适用于光栅图像,而不能用于矢量图形。介绍一种适合矢量图形的水印算法,并结合SVG的特性将算法运用到SVG图像中。

The vector graphics images have become popularization along with the development of Internet and the muitimedia techniques. This gives rise to serious problems for vector images including wide spread copyright violation, illegal copying, easy forging etc. But the digital watermarking methods aren＇t suitable for vector graphic images because mostly suitable only for bitmap images. A algorithm is presented using as anchor point all vertex coordinates typically presented in almost all SVG files.