imregister function and affine transformation

I need to see the transformation matrix (affine transformation)which is used during multimodal registration.

thanks

[Matt J]

Yes, that makes sense. But IMREGISTER doesn't give it to you.

Answer 1

[Alex Taylor]

As of R2013a, users who want access to the geometric transformation estimate computed by imregister can call the function imregtform. The function imregtform returns a geometric transformation object that can be applied to the moving image using the new function imwarp.

http://www.mathworks.com/help/images/ref/imregtform.html

The function imregister calls imregtform to obtain the geometric transformation that registers the moving image to the fixed image and then calls imwarp to produce the returned output image.

[Evolution]

Thank you Alex .I will be switching to the new Matlab version soon.

Answer 2

[Alex Taylor]

You can use the 'DisplayOptimization' Name/Value pair to get a textual display of the transformation estimate. There is no way currently to get access to the transformation as an output argument. We have frequent requests for this enhancement from customers and we're actively investigating solving this workflow gap.

Answer 3

[Evolution]

Thank you Taylor .I have used the 'DisplayOptimization' but the transformation estimate appears incomplete as if half of it is displayed .