MATLAB: Struggling with shifting an image using non-integer offset

image processingImage Processing Toolboximage realignmentimage registrationinterp2

I am not sure I understand the fact that the image's resolution 1500×2000 (integer values) pixels and offset_X = -3.0314 and offset_Y = 1.2432.

How to go about shifting the image taking into account the offset?

Use IMTRANSFORM, griddedInterpolant(), or INTERP2.

or:

XX = magic(3);
YY = eye(3);
XX_trans = transpose(XX);
YY_trans = transpose(YY);
out = [XX_trans(:) YY_trans(:)];

No, you'd have to do that manually by looping and shifting (translating) each image one at a time.