Crash after applying close_merge_vertices && Ball pivoting

[wikyburns]

testing_file.zip

Hi, I have a point cloud, and when I apply the filter: merge_close_vertices it removes everything.

I tested that on UI Meshlab and it works great but not with the pymeshlab.

ms = pymeshlab.MeshSet()
ms.load_new_mesh('toConvert/'+file_name)
ms.apply_filter('merge_close_vertices', threshold=12)
ms.apply_filter('surface_reconstruction_ball_pivoting', ballradius= 0, clustering=20, creasethr= 90, deletefaces=0)
ms.apply_filter('laplacian_smooth', stepsmoothnum=3, selected=0)
ms.apply_filter('transform_scale_normalize', axisx=1000, axisy=1000, axisz=1000, uniformflag=1, scalecenter='origin', customcenter=[0,0,0], unitflag=0, freeze=1, alllayers=0)
ms.apply_filter('transform_translate_center_set_origin', traslmethod='Center on Scene BBox')
ms.save_current_mesh(fileName+'.obj')
ms.save_current_mesh(fileName+'.stl')

Thanks,

[alemuntoni]

ms.apply_filter('merge_close_vertices', threshold=12) treats the parameter threshold as a float (absolute value).
To treat it as a percentage, you need to pass an object of type Percentage to the parameter threshold.

Take a look to this tutorial.

[alemuntoni]

Hi @alemuntoni , I tried with the object Percentage and now it's doing nothing, just stopping with any type of error, I tried applying the filter exported from meshlab and the same:

percentageMerge = pymeshlab.Percentage(12.00)
ms = pymeshlab.MeshSet()
ms.load_new_mesh('toConvert/'+file_name)
ms.apply_filter('merge_close_vertices', threshold=percentageMerge)
#At this point returns {}

ms.apply_filter('surface_reconstruction_ball_pivoting', ballradius= 0, clustering=20, creasethr= 90, deletefaces=0)
After apply this filter the script just stops without any error.

Thanks,

Hi,

I just don't understand what the issue is here. If it stops without any type of error, maybe everything was successful??
If there is no crash or exception thrown, it means that the filter has been applied correctly.

[wikyburns]

Hi @alemuntoni

Can you try it on your server if you wish, it just closes with any type of result, cause python just stops on try to apply the filter: surface_reconstruction_ball_pivoting.

any idea? on the UI meshlab works perfectly.

Really thanks man!

[alemuntoni]

oh ok! that's strange, it seems that it is crashing... I'll check on this.

[alemuntoni]

fixed here, the issue was in the ball pivoting filter in meshlab.
It will be available in the next version of pymeshlab. In the meantime, as a workaround, before calling the ball pivoting filter, you can call:

ms.current_mesh().compact()

[wikyburns]

fixed here, the issue was in the ball pivoting filter in meshlab.

It will be available in the next version of pymeshlab. In the meantime, as a workaround, before calling the ball pivoting filter, you can call:

ms.current_mesh().compact()

@alemuntoni really nice!

Great job!

Thanks!! 👏🏼👏🏼👏🏼