How does imwarp handle complex numbers?

Question

I have a complex image I (an nxm array of complex numbers). I noticed that imwarp accepts complex images as input.

So this code:

J=imwarp(I, tform, 'linear');

will produce an output, that, on visual inspection seems to make sense.

But I could't find any information on how exactly the interpolation of the pixel values was done. Does anyone know about it or could point out documentation?

Thanks!

Answer 1

The interp option uses the same mechanism as it is in regular interp1, interp2, ....etc.

With a complex image in imwarp, interpolation operates individually on the real and imaginary parts separately.