# Transforming Point not working when flipping

**URL:** <https://discourse.itk.org/t/transforming-point-not-working-when-flipping/4446>\
**Category:** Beginner Questions\
**Tags:** simpleitk, python\
**Created:** [September 23, 2021, 3:32pm UTC](https://discourse.itk.org/t/transforming-point-not-working-when-flipping/4446 "2021-09-23T15:32:09Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![dzenanz](https://discourse.itk.org/user_avatar/discourse.itk.org/dzenanz/32/1093_2.png) [@dzenanz](https://discourse.itk.org/u/dzenanz)\
**Post date:** [September 23, 2021, 8:20pm UTC](https://discourse.itk.org/t/transforming-point-not-working-when-flipping/4446/2 "2021-09-23T20:20:15Z")

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If you do flipping, that will likely take a large part of the displacement field outside of your image. That might be the problem.

How is elastic deformation represented? If using BSpline, maybe you should “flatten” your transforms to a BSpline instead of displacement field.

If my theory is correct, using a different origin and larger size along z axis for displacement field should “resolve” the problem.

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