摘要
提出一种用于图像内容认证和保护的脆弱数字图像水印算法。本算法新颖之处是在图像中嵌入定位和恢复两种水印,通过两种水印的提取检测,不但可以定位图像中的任何细微篡改,还可恢复被篡改的图像数据;此外,算法采用由密钥控制水印的生成和检测,保证了水印的安全性和保密性;经实验验证,该算法不但可以有效地检测出图像中被篡改数据的位置,而且能较好的恢复被篡改的区域。
An auto-restorable fragile watermarking algorithm for image content authentication, is presented. The novelty of the algorithm is that it embeds two kinds of watermarking in the image-location watermarking and restoration watermarking. By detecting the watermarking, the location of any minute changes in images can be detected ,and the tampered image data can also be restored. In addition, a secret key is used in the generation and detection of the watermarking to increase the security of watermarking and prevent forged watermarking. Experimental results show that the watermarking produced by the given method is sensitive to tiny changes in images, and good results of detecting the tampered location and restoring the tampered data can be obtained.
出处
《合肥工业大学学报（自然科学版）》
CAS
CSCD
北大核心
2005年第9期1117-1120,共4页
Journal of Hefei University of Technology：Natural Science
关键词
图像认证
脆弱数字图像水印
篡改定位
图像恢复
image authentication
fragile digital image watermarking
tamper location
image restoration
