non uniform interpolation code

is this code exact for nonuniform interpolation

A = phantom(256); a1=A(1:7:256,1:7:256);imshow(a1); a2=A(3:7:256,2:7:256);imshow(a2); a3=A(3:7:256,4:7:256);imshow(a3); %------------------------rotate and translate images----------------------% %tform = affine2d([2 0.33 0; 0 1 0; 0 0 1]); %b1=a1 %b2 = imrotate(a2,30,'bicubic','crop'); %b3 = imwarp(a3,tform); %apply transformation into image b1 = a1; b2 = shift_image(a2,[-1 3]); b3 = shift_image(a3,[2 5]); figure; imshowpair(b1,b2,'Scaling','joint'); figure; imshowpair(b1,b3,'Scaling','joint');

%-----------------------------registration--------------------------------% %[optimizer, metric] = imregconfig('monomodal');%or monomodal %optimizer.InitialRadius = 0.01; %optimizer.Epsilon = 1.5e-4; %optimizer.GrowthFactor = 1.009; %optimizer.MaximumIterations = 300; %_________________________________________________________________________% moving_reg1 = imregister(b2,b1,'similarity',optimizer,metric); % using phase correlation the ouput at translational 0,843 at 0.03 moving_reg2 = imregister(b3,b1,'similarity',optimizer,metric); %using intensity monomodal geometric 0.703 ,0.04 figure;imshowpair(b1,moving_reg1,'Scaling','joint');

figure;imshowpair(b1,moving_reg2,'Scaling','joint'); %-------------------------------interpolation-----------------------------% x=interp2(moving_reg1,moving_reg2); %end %-------------------------------