基于小波变换的最佳融合算法  

Optimal image fusion algorithm based on wavelet transforms

作　　者：尹德辉[1] 李炳法[2] 唐燕[3] 

机构地区：[1]泸州医学院生物医学工程系,泸州646000 [2]四川大学计算机学院,成都610064 [3]四川电视大学,成都610073

出　　处：《四川大学学报（自然科学版）》2007年第6期1205-1209,共5页Journal of Sichuan University(Natural Science Edition)

基　　金：四川省教育厅青年基金(2005B046)

摘　　要：本文研究了小波域融合模型,为实现图像的最大融合,用最小二乘原理得到了与图像有关的置乱变换,提高了算法的融合度.将融合因子与置乱操作所用矩阵及迭代次数作为密钥,增加算法的安全性.实验证明该算法使图像的融合因子得到较大提高,增强了隐藏图像的抗攻击能力,可广泛应用于电子图像产品和数字图书馆的版权保护.The fusion model in wavelet domain is proposed. To maximize fusion, we derive the image related scrambling transform based on least square error principle. The algorithm improves the extent of fusion. The fusion factor, the scrambling matrix and iteration number are used as secret keys with the intension of improv- ing the algorithm＇s security. Simulation experiments have proved that the proposed algorithm improves the fusion factor significantly, and enhances the hidden image＇s capability of resisting attacks. The algorithm can be widely used for copyright protection of electronic image products and digital libraries.

关 键 词：最佳几何变换 最小二乘原理 最佳融合因子 

分 类 号：TP392[自动化与计算机技术—计算机应用技术]