# Warping my reference mesh to validate model **URL:** \ **Category:** Uncategorized\ **Created:** [September 27, 2023, 6:06pm UTC](https://shapeworks.discourse.group/t/warping-my-reference-mesh-to-validate-model/175 "2023-09-27T18:06:44Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![SLaranjeira](https://avatars.discourse-cdn.com/v4/letter/s/5f8ce5/32.png) [@SLaranjeira](https://shapeworks.discourse.group/u/SLaranjeira)\ **Post date:** [September 27, 2023, 6:06pm UTC](https://shapeworks.discourse.group/t/warping-my-reference-mesh-to-validate-model/175/1 "2023-09-27T18:06:44Z")
Hello shapeworks community, I am developing an SSM of vertebrea and have been following the deepssm example for python. After fitting and optimization I reconstruct all the meshes from the reference. In most cases, it does a great job. However, there are some cases where there are connections between particles that are not desired (example attached: the particles within the red circles should not be connected). I was wondering: 1. what is the best way to avoid these errors? Should I further groom the meshes before fitting the SSM? 2. Is there a metric to spot these errors automatically? Thank you very much, Best wishes, Simão ![Screenshot 2023-09-27 at 19.02.08](https://global.discourse-cdn.com/free1/uploads/shapeworks/original/1X/de4ff273dc5c81cec008bd488c56b00537a923b4.jpeg) ---
**Author:** ![amorris](https://avatars.discourse-cdn.com/v4/letter/a/73ab20/32.png) [@amorris](https://shapeworks.discourse.group/u/amorris)\ **Post date:** [September 29, 2023, 3:02am UTC](https://shapeworks.discourse.group/t/warping-my-reference-mesh-to-validate-model/175/2 "2023-09-29T03:02:09Z")
Usually this type of bad warping is due to the particle system not being in good correspondence. I would check that first. When you look at the PCA modes, are the particles crossing at all or do they stay in correspondence across the PCA values?