摘要
提出一种适用于红外图像版权保护的数字水印算法。以整数小波变换为基础,对灰度水印图像Logistic混沌加密和小波分解后,结合人类视觉系统和JND思想,选取重要感知系数,融合到红外图像特定的位置,采用分层检测的方法提取水印。实验结果表明,该算法实现速度快,嵌入水印前后红外图像温度变化在±1%内,不影响红外图像实际应用。具有较好的不可见性,对常见的JPEC压缩、滤波、加噪、剪切等攻击具有较强的鲁棒性。
A watermarking algorithm for the infrared image copyright protection was developed. The whole process was based on integer wavelet transform. Encrypted the grey scale image watermark by Logistic chaotic sequence, then wavelet transformed. Selected the perceptually significant wavelet coefficients, then inosculated in the given position of the original image. The watermark was detected hierarchically to save detection time. Experimental results show that the algorithm can be ensure the range of temperature in ± 1% ,which did not affect the application of the infrared image. Meanwhile, it is implemented fast, invisible and robust enough.
出处
《激光与红外》
CAS
CSCD
北大核心
2009年第5期562-565,共4页
Laser & Infrared
基金
北京市教委科研基金(No.2002KJ028)资助
