maketform affine3d not recognized (but recommended)

Hi,

in following this example I am encountering a few problems.

First of all, if I type

tform = maketform('affine', A);

where A is a 4x4 identity matrix, Matlab underlines "maketform" and gives a warning that AFFINE is not recommended and I should use AFFINE2D or AFFINE3D. However, if I try to use either of those two I get the error:

Unrecognized TRANSFORMTYPE: 'affine3d'.

Nevermind, I stick with affine and ignore the warning, but then, when I try to do:

RegisteredImage= tformfwd(InitialImage, tform);

I get the following error:

Error using TFORMFWD
Expected input number 2, U, to be one of these types:

double

Instead its type was uint16.

I assume the error refers to the image, which is actually a 3D matrix of uint16, but even a cast does not seem to solve the issue.

Could anyone please shine some light on this?

Answer 1

[PaoloB]

Silly me:

affine3d is not the the attribute of "maketoform", rather a function in itself...

So now my code is:

tform = affine3d(A)