[elastix] Specify ROI (mask)

Stefan Klein s.klein at erasmusmc.nl
Wed Mar 24 22:26:25 CET 2010

Dear Vratislav,

Could you provide us with
1) the fixed image
2) the moving image
3) the elastix parameter file that you use?

With this information it will be easier for us to guess what goes wrong.

To keep the message size small, could you place the images on some 
website for download somewhere? Or use something like www.send2deliver.com?

Thanks in advance,

Vratislav Harabiš wrote:
> Hi,
> i would like specify ROI for registration. In elastix manual is 
> recomended to use fixed mask ( -fMask mymask.mhd). I have two images in 
> mhd, fixed and moving (the moving image is same as fixed image, just 
> manualy translated by -50 -20 pix). If i use elastix registration 
> without the mask, result image is well registered (result transform 
> parameters are -50.03 and -20.01). But if i use fixed mask, the result 
> transformation parameter is -1,19 and 0.45. In image mask.png is shown 
> position and size of the mask (lighter area) with respect to fixed image.
> Thank you.
> Vratislav Harabis
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