function_kernelsforfft.m

对图像进行local approximation处理的技术,应用于图像去模糊中.

function [y]=KernelsForFFT(g, support);

% Kernels for FFT

[yg,xg]=size(g);
[yS,xS]=size(support);
big_y=zeros(yS,xS); big_y(1:yg,1:xg)=g; 
y=circshift(big_y,round([(yS-yg)/2 (xS-xg)/2]));