SCI Seg3D Mailing List

Text archives Help

[Seg3D] Interpreting the result of the Point Set Registration

Chronological Thread 
  • From: Sergio Vera <>
  • To:
  • Subject: [Seg3D] Interpreting the result of the Point Set Registration
  • Date: Thu, 19 Dec 2013 13:24:00 +0100

Dear Seg3D2 staff

I have a binary mask loaded in Seg3D2. With the Transform operator, I generate a copy of that same image but I change its origin to be +8 units in the X axis.

So I have a mask and the same mask but displaced in the X axis.

If I apply the Point set registration algorithm to these masks, after 30 iterations I obtain a new mask that is close to the target mask, but the translation parameters that appear on the ITK interface are very confusing. 

I would expect to obtain a translation in X close to 8 (or -8) and Y and Z translation to be near 0.
Instead I obtain translations on X, Y and Z between 0.5 and 0.9. However, the newly generated mask is really close to the target mask.

Is there a problem with the transformation values? I'm interpreting the results wrongly?

Many thanks

Sergio Vera

 Alma IT Systems
 C/ Vilana, 4B, 4º 1ª
 08022 Barcelona
 T. (+34) 932 380 592

Archive powered by MHonArc 2.6.16.

Top of page