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Re: [shapeworks-users] Questions about warping mean mesh and visualizing normals


Chronological Thread 
  • From: Alan Morris <alan.morris@utah.edu>
  • To: "shapeworks-users@sci.utah.edu" <shapeworks-users@sci.utah.edu>, "wenzheng tao" <wztao@cs.utah.edu>
  • Subject: Re: [shapeworks-users] Questions about warping mean mesh and visualizing normals
  • Date: Tue, 2 Aug 2022 07:02:45 +0000
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Hi Wenzheng,

Yes, this functionality is available in Studio, for example:

http://sciinstitute.github.io/ShapeWorks/latest/studio/studio-analyze.html#group

If you click the 'mean' for each group, you can export the reconstructed mesh
from the File->Export menu.

Let me know if you have further questions.

Thanks,
Alan


On 8/1/22, 5:15 PM, "shapeworks-users-request@sci.utah.edu on behalf of
wenzheng tao" <shapeworks-users-request@sci.utah.edu on behalf of
wztao@cs.utah.edu> wrote:

Hello,

I am using Shapeworks to do shape analysis on some soft tissues and I
would like to visualize the group difference in a way similar to the
attached "norm_vec.png". It is a figure from [1], just as an example. I
am wondering if Shapeworks has built in functions that can help me
achieve the goals and I think there are mainly 2 questions.

1. Is there a way to get a nice mean mesh for a subgroup?
I assume it needs these steps: export the mean mesh from Shapeworks
Studio, average the particles of the subjects in a selected group, warp
the mean mesh to match the average particles. Does Shapeworks have these
functions (I can do the averaging in Python)?

2. Can shapeworks visualize normal vectors with colored arrows?
I'd like to get a similar figure like the attached "norm_vec.png".

Thanks for your help!
Wenzhneg


Ref:
[1] Cates, Joshua, Lisa Nevell, Suresh I. Prajapati, Laura D. Nelon,
Jerry Y. Chang, Matthew E. Randolph, Bernard Wood, Charles Keller, and
Ross T. Whitaker. "Shape analysis of the basioccipital bone in
Pax7-deficient mice." Scientific reports 7, no. 1 (2017): 1-10.


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