摘要： 根据混沌系统良好的初值敏感性，提出了一种基于混沌系统的图像易碎水印方案。该方案对8×8 图像块的直流能量和平均DCT系数进行混沌迭代产生易碎水印，该水印不仅保证了对篡改的敏感性，而且可以对攻击进行篡改定位。
关键词:
易碎水印；混沌迭代；篡改定位；图像认证
Abstract: This paper puts forward a novel chaotic fragile watermarking based on chaotic theory. It uses direct energy and average DCT coefficient as the initialization condition of the chaotic system, and iteratives the chaotic system to acquire the fragile watermarking, which can easily detect and locate the tamper of the image. Experiments show that scheme is sensitive about tamper, and has higher efficiency.
Key words:
Fragile watermarking; Chaotic iteration; Tamper location; Image authentication
张 杰，张士杰，高山青，刘粉林. 一种基于混沌映射的易碎水印[J]. 计算机工程, 2006, 32(9): 159-161.
ZHANG Jie, ZHANG Shijie, GAO Shanqing, LIU Fenlin. A Scheme of Fragile Watermarking Based on Chaotic Theory[J]. Computer Engineering, 2006, 32(9): 159-161.