How to do an image registration

[ydelacre]

Hi,


For my application I need to do an image registration (i. e. I need to align one image respect to another). That means that I have to apply a general affine transform to my image, so I must multiply every coordinate with a 2x2 matrix and then do a translation. Does anyone know if there are VI's that I can use to do this without having to transform my image in a vector of numbers and then apply the transformation (and then do some interpolation)...
Note that I have the IMAQ Vision library.

Thanks in advance for all advice,

Yves

[AlexxxR]

Hi,

I´m sorry i think I can´t support you, because I don´t know any VI´s which especially meet the needs. But perhaps any of our customers or Alliance Partners have some experience with image registration. Perhaps you can ask Qualimatest.

http://sine.ni.com/apps/we/niaa.search_int?p_search_type=COM2&p_submit=1&p_country=CH

Hope this helps a bit.

Alex R

NI Swiss Support Team

[sferic]

Hi,

I have the same image registration requirement for some of my applications, i.e. I need to be able to cross-reference features in different images. I also have the IMAQ Vision Library and suggest that this would be a useful feature to add to it. If anyone has subsequently written VIs to do this, I would love to hear about it.

(BTW: I know that there are demos in the Matlab Image processing toolbox that do it. Maybe NI engineers could knock one up)

Regards

Sferic