摘要
首先利用线性整数插值和降采样图像傅里叶变换原理,证明了文中方法的正确性;然后给出了亚像素配准过程,并对误差进行理论分析;最后通过多光谱图像和人工图像的配准对该方法进行实验验证.实验结果表明:文中方法具有亚像素级的配准精度.
Theoretical deduction is given to show the correctness of our approach based on the principle of integer interpolation and Fourier transform for under-sampled image. Subpixel registration algorithm and its error analysis for under-sampled image are presented. Experiment results of multi-spectral and simulated images show that our scheme has overcome the drawback of classic phase correlation, good results have been obtained for subpixel translation estimation of images of different spectral bands.
出处
《计算机辅助设计与图形学学报》
EI
CSCD
北大核心
2005年第6期1273-1277,共5页
Journal of Computer-Aided Design & Computer Graphics
基金
"十五"国防科技(电子)预研项目(413160501)
关键词
亚像素配准
交叉能量谱
三线性插值
降采样
相位相关
subpixel registration
cross power spectrum
tri-linear interpolation
under-sample
phase correlation
