setting bounds for transformation parameters in registration

Hi all, I want to see if anyone knows if there is a way to set a boundary for the transformation parameters in imregister() or other registration function in matlab.

i.e. I want shear to be between [-.001, .001], rotation to be with in +-.01 degree, scaling to be +-15%, and translation with in +-150 pixels.

I thought of just breaking down the registration into a feature based registration for the scaling and rough estimate of the translation , a translation only registration, and finally a affine registration to iron out the remaining parameters which should be very small. Is there a more direct method?

thanks in advance, Dan

[Robert Paynter]

I would like to see a response to this. I have been trying out these functions and sometimes it makes things worse! Here's an image pair where I used imregcorr first. Then using imregtform to hopefully refine it, its estimates are worse - sometimes wildly wrong - big rotations etc. Here's my current images - clearly there's only a few pixels of shift, perhaps a little rotation, but no shear or dilation:

and