摘要
提出不需要原始图文件比对即可提取出隐藏信息的方法。作法是应用扩频信息隐藏技术,选取部分隐藏位置与加入错误修正编码和交错器,强化信息隐藏的强度,以JPEG压缩破坏、随机信道破坏与图像分割等方式来验证。实验结果显示,在JPEG压缩品质为80%,压缩率为16倍时,提取隐藏信息的误比特率在6%以内;随机信道破坏的破坏率在15%时,误比特率在13%以内;图像分割1/2时,误比特率在13%以内。表明该方法能提高信息隐藏在高误比特率信道的鲁棒性。
This paper presents a special method that does not need the comparison of primitive diagram file to take out hiding message immediately.This paper applies spread spectrum steganography technique,selectes the hiding part position and joins the error corrected code and interleaving,to enhance the robustness of steganography.Testing with the JPEG compress,random channel error and image cutting,experiment results show the JPEG compress quality as 80%, compress magnification as 16 times,the bit error rate of picking the hiding message is below 6%;The channel error rate at 15%,bit error rate of the hiding message is below 13% ;Cutting the image half, bit error rate of the hiding message is below 13%.It shows this method can improve robust of steganography for high bit error rate channel.
出处
《计算机工程与应用》
CSCD
北大核心
2006年第3期146-151,共6页
Computer Engineering and Applications
关键词
高误比特率
鲁棒信息隐藏
扩频信息
错误修正编码
high bit error rate,robust steganography,spread spectrum information,error corrected code
