一种基于互信息的图像频域配准算法  

Frequency domain approach based on mutual information to image registration

作　　者：吴亚娟[1] 刘晓锋[1] 

机构地区：[1]西华师范大学计算机学院,四川南充637002

出　　处：《计算机工程与应用》2008年第19期190-192,共3页Computer Engineering and Applications

基　　金：四川省教育厅自然科学青年基金项目(the Youth Natural Science Foundation of Department of Education of Sichuan Province of China;No.07ZB088)

摘　　要：图像配准是多源图像分析的关键步骤,是图像应用的基础。频域配准方法具有配准精度高和速度快的优点。P.Vandewalle的频域配准算法明显优于其他频域算法和一些空间域算法,对该算法进行了改进,仅使用了一半图像频谱灰度,在对分块后的频谱灰度进行分析时引入了互信息理论,实现了配准精度更高、速度更快的基于互信息的图像频域配准算法。Image registration is the key step of image analysis with images from multiple resources.It is also the foundation of image application.The advantages of frequency approaches to registration are rapidness and high precision.The frequency approach proposed by P.Vandewalle outperforms previous frequency methods and some special domain methods.In this paper,it is improved to be faster and get higher preeision.Finally,a frequency domain approach based on mutual information to image registration is presented by using half the amplitude of the Fourier transform and mutual information theory .

关 键 词：配准 互功率谱 互信息 傅里叶频谱 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]