# After ACPC registration - reset origin to MCP?

**URL:** <https://discourse.slicer.org/t/after-acpc-registration-reset-origin-to-mcp/4647>\
**Category:** Support\
**Tags:** registration\
**Created:** [November 5, 2018, 10:11pm UTC](https://discourse.slicer.org/t/after-acpc-registration-reset-origin-to-mcp/4647 "2018-11-05T22:11:00Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![cboulay](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/cboulay/32/2447_2.png) [@cboulay](https://discourse.slicer.org/u/cboulay)\
**Post date:** [November 5, 2018, 10:11pm UTC](https://discourse.slicer.org/t/after-acpc-registration-reset-origin-to-mcp/4647/1 "2018-11-05T22:11:00Z")

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Hello.  
What is the recommended way to reset the origin to MCP after doing ACPC transform? So far I’ve been calculating the average coordinates of AC and PC, then creating a Linear Transform that is simply a negative translation of that. I guess there might be a way to do this automatically that I am missing.  
Thank you,  
Chad

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**Author:** ![pieper](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/pieper/32/8_2.png) [@pieper](https://discourse.slicer.org/u/pieper)\
**Post date:** [November 6, 2018, 4:47pm UTC](https://discourse.slicer.org/t/after-acpc-registration-reset-origin-to-mcp/4647/2 "2018-11-06T16:47:51Z")

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I don’t think there’s any automatic way to do that now, but it sounds like something that could be added to the module:

> <https://github.com/Slicer/Slicer/blob/b0443c748cb51904dfd82fa603b4353a335e3364/Modules/CLI/ACPCTransform/ACPCTransform.cxx>