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《Electronic Measurement Technology》 2010-05
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Super-resolution image reconstruction based on an improvement frequency domain registration approach

Huang Hanchuan Wang Peikang(School of Information Science and Technology,University of Science and Technology of China,Hefei 230027)  
Image registration is the necessary step of super-resolution reconstruction,and also is a Key step which has the greatest effect on reconstruction.The phase correlation method in frequency domain has advantages of anti-noise performance,a small amount of computing,etc.In this paper,we put forward a registration algorithm based on phase correlation method,which estimates parameters by only aliasing-free parts in frequency domain.Firstly,we avoid aliasing parts from low-resolution image by low-pass filter,and then carry out a Fourier transform and a polar transform for its amplitude,which makes the inverse Fourier transform of the cross-power spectrum be a 2D impulse.And we can get the registration parameters from the impulse location.Simulation results show that the improvement method has good precise of registration and good effect on image reconstruction.
【CateGory Index】: TP391.41
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