search

yanbo-huang / Coherent-Point-Drift-Python

This project using python to implement the Coherent Point Drift algorithm
GNU General Public License v2.0
19 stars 6 forks source link

Using STL files with CPD registration #2

Open stevenagl12 opened 5 years ago

stevenagl12 commented 5 years ago

Is there a way to use STL files to perform the rigid and non-rigid registration?

yanbo-huang commented 5 years ago

The methods don't limit what kind of original files you are using. It needs numpy ndarray as input, so probably check some python libraries to help you to load the STL files. I did a quick search (didn't test), numpy-stl looks like something you need.

yanbo-huang commented 5 years ago

@stevenagl12 did you try it? Any good news?

stevenagl12 commented 5 years ago

I'm working on trying it, but the PyPl website for numpy-stl doesnt really have good code for how to access the vertices themselves from a model. Only how to import the full model or build a model. I'm hoping there's an easier way than importing the file, parsing it for all the vertices, then putting them into a mesh like it seems.

On Fri, Aug 9, 2019, 05:31 Yanbo notifications@github.com wrote:

@stevenagl12 https://github.com/stevenagl12 did you try it? Any good news?

— You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub https://github.com/Hennrik/Coherent-Point-Drift-Python/issues/2?email_source=notifications&email_token=AHHKCLMC2NDMTDB3TY5OANTQDU2PFA5CNFSM4IJB7XNKYY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGOD36E5XQ#issuecomment-519851742, or mute the thread https://github.com/notifications/unsubscribe-auth/AHHKCLL2KEGOWNZKPTCM2M3QDU2PFANCNFSM4IJB7XNA .

stevenagl12 commented 5 years ago

I tried it using trimesh to import the meshes and it is failing. Rigid registration according to your code appears to require the same number of points between both meshes? In addition, I have mesh vertices with (138334, 3) & (154682, 3) dimensions, so when I run the nonrigid registration it is giving me: MemoryError: Unable to allocate array with shape (154682, 154682, 3) and data type float64. Is the memory error because of too little ram?

On Fri, Aug 9, 2019 at 5:59 AM Steven Lewis salewis@buffalo.edu wrote:

I'm working on trying it, but the PyPl website for numpy-stl doesnt really have good code for how to access the vertices themselves from a model. Only how to import the full model or build a model. I'm hoping there's an easier way than importing the file, parsing it for all the vertices, then putting them into a mesh like it seems.

On Fri, Aug 9, 2019, 05:31 Yanbo notifications@github.com wrote:

@stevenagl12 https://github.com/stevenagl12 did you try it? Any good news?

— You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub https://github.com/Hennrik/Coherent-Point-Drift-Python/issues/2?email_source=notifications&email_token=AHHKCLMC2NDMTDB3TY5OANTQDU2PFA5CNFSM4IJB7XNKYY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGOD36E5XQ#issuecomment-519851742, or mute the thread https://github.com/notifications/unsubscribe-auth/AHHKCLL2KEGOWNZKPTCM2M3QDU2PFANCNFSM4IJB7XNA .

-- Sincerely,

Steven A. Lewis