# Mandible registration

**URL:** https://discourse.slicer.org/t/mandible-registration/9902
**Category:** SlicerCMF
**Created:** [January 22, 2020, 2:25am UTC](https://discourse.slicer.org/t/mandible-registration/9902 "2020-01-22T02:25:25Z")
**Posts on this page:** 1
**Showing post:** 18

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### Author: ![manjula](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/manjula/32/80981_2.png) [@manjula](https://discourse.slicer.org/u/manjula)
#### Post date: [January 30, 2020, 9:02pm UTC](https://discourse.slicer.org/t/mandible-registration/9902/18 "2020-01-30T21:02:32Z")

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Hi @Lexus_H and @bpaniagua

Sorry i was bit busy.

I did use the models Erin send for registration with CMF Regis - surface registration

With max iterations and max landmarks.

 ![Screenshot](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/8/2/8206cd6c11e4129b82c01da7e22c3eb2d4dc5cba.jpeg)

Please see the video

https://www.youtube.com/embed/JST4mpQrMUs?feature=oembed&wmode=opaque

The registration is not good. This is similar to problem i encountered with my previous work.

> [@Revisiting Rigid Mesh Registration](https://discourse.slicer.org/t/revisiting-rigid-mesh-registration/9424/5):
>
> @lassoan These are the results I get with the cloud compare fine registration with RMS. As you can see when i look at the model to model distance and view it in shape population viewer with the same setting… our land marks show almost exact matches ( Green ) in the viewer. I get almost same resutls with the cloud compare iteration method al…

I solve my problem with cloud compare but i wanted to stick to one software for my work and i got good results with CMR- ROI registration.

In this case i did not do the ROI registration because i again encountered the bug that i reported on this some time back.

> [@CMFReg - ROI registration Bug](https://discourse.slicer.org/t/cmfreg-roi-registration-bug/9443):
>
> There is a bug with CMF reg ROI registration method. I found this in the stable version as well as the nightly build. This is from the nightly build. Landmarks ROI does change dynamically and is kept at a fixed value. Can some one please tell me how to fix this ? ROI is stuck at 10. I did get rid of the all the configurations files and started with fresh install. (i am using Linux)

I use these models in cloud compare even with default setting i got good results.

please check the color maps with both registration methods

https://www.youtube.com/embed/qU1iyDtL6Us?feature=oembed&wmode=opaque

Erin i think you can try CMF ROI method. I think it should work pretty well.

Also since you have DICOM data why don’t you do the Image registration (General Registration -BRAINS) and then do the segmentation. Then your segments will be created properly registered. It would be great if @bpaniagua or Prof @lassoan can tell further about this.

Is registration on DICOM will be more accurate than registering the Surface models/Segments ?

Despite the answer to me previously by Prof Lasso on registration i am still baffled by the accuracy of cloud compare registration over CMF Surface registration. 🤩

In any case the problem that we set out to see seems like you are not measuring the model to model distance properly. Please see the video.

https://www.youtube.com/embed/-KhemBa7wbs?feature=oembed&wmode=opaque

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