模糊/去模糊攻击的研究  

A brief review on blur/deblur attack

作　　者：齐亚莉[1] 李业丽[1] 

机构地区：[1]北京印刷学院计算机科学与技术系,北京102600

出　　处：《北京印刷学院学报》2005年第4期11-13,共3页Journal of Beijing Institute of Graphic Communication

摘　　要：为了有效抵抗模糊/去模糊攻击,利用脆弱性水印技术,提出了一种基于块交叉交插RS编码的水印方案。该算法可以检测出图像中任何细微的篡改,对其进行定位,并且能恢复大面积被篡改的图像数据。实验表明,基于块交叉交插RS编码的水印在经过模糊/去模糊攻击后,仍然有很高的鲁棒性,可以有效抵抗模糊/去模糊攻击。但该算法在错误数据定位方面有时会有将个别未被篡改的数据错认为被修改的数据的情况,这一问题可采用多个编码串进行更复杂的解码方法来解决。采用多种水印的组合模型是未来抵抗模糊/去模糊攻击模型的研究方向。For resisting blur/deblur attack effectively, this paper uses fragile digital image watermarking, and presents the algorithm based the crossed-interleaved RS block. The method is sensitive to tiny changes in images, and also provides very good results of detecting the tampered location and restoring the tampered data. Experimental results demonstrate the algorithm can resist blur/deblur attacks validly. But the algorithm considers the correct data as error data when it locates the fault data sometimes. This problem can be disposed by using many encoding string and complicated decoding method. The future research topics against blur/deblur attack successfully are integrating many watermarking method into a compound model.

关 键 词：模糊/去模糊攻击 脆弱性水印 RS码 错误数据定位 块交叉交插RS编码 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]