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alicevision / Meshroom

3D Reconstruction Software
http://alicevision.org
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[bug] Texturing decimated mesh bug #2542

Open bgpantojar opened 1 month ago

bgpantojar commented 1 month ago

Describe the problem I am decimating the mesh using MeshDecimate node after MeshFiltering Node. After decimating the mesh, I use Texturing node coming out of the MeshDecimate. The textured mesh increases the number of triangles considerably. In my test I have the following approx numbers.

Mesh after Filtering: 400k triangles Textured mesh just with MeshFiltering node: 400k triangles Mesh after decimate: 38k triangles Textured mesh using as input the decimated mesh: 337k triangles

When opening the textured mesh it looks like the decimated one, but it has the increased number of triangles.

Is this a bug? or it is an expected behaviour?

Best, Bryan

Screenshots Screenshot 2024-09-18 170136

bgpantojar commented 1 month ago

Hello again...

This was tested with the last version of meshroom. Defenitely it is a bug as I did exactly the same with the 2021.1.0 version and the textured mesh of the decimated one kept aprox the same number of triangles.

Best, Bryan

msanta commented 1 month ago

Does the textured mesh actually have that number of triangles or is it just an issue with the display?

bgpantojar commented 1 month ago

I opened the file with a text reader and it does have that number. Same thing opening it with meshlab.