如何清理这个 Emily 网格以准备 tetgen？
How to clean up this Emily mesh to prepare for tetgen?
我以前问过这个问题，但是在 github here , but never got farther into it. Now I have picked it up, and am trying to get this mesh tetrahedralized, but I keep getting errors see below. Ahlthough the statement clearly says "Found a segment and a subface intersect", I don't know how would I go about resolving that ? The question here is more precisely how to find if mesh has an open boundary and how to locate that and fix that in perhaps blender ? I am asking about open boundary since "camel.off" which clearly has an open boundary gives the same error. I even tried using another geometry processing tool but it showed no holes found, and its auto repair didn't work either. I get the obj file of Emily 3D scan and remove everything such as eye lashes, eyeballs, inner and outer extra subgeometries. I am using blender to export and using libigl tetgen example to see it if it works. I inspected the mesh, I don't see any holes in the topology, the base hole I fill up using the blender grid fill functionality. See the attached picture.
在 libigl 中，我在使用 tetgen 处理之前在查看器中启动了它，它看起来不错，我还尝试了所有 blender 清理工具，请参阅 。
有没有办法在尝试创建四面体化网格之前自动进行更多预处理以确保顺利运行？请指教。
请注意，艾米丽的嘴唇有 self-intersecting 个面孔。这可以按照@Dominik Mokris 的建议在 MeshLab 中查看。然而，在删除这些面之后，如果没有额外的面变成self-intersecting，很难正确填充它。看到 tetgen 的主要错误之一是关于 self-intersection。我发现的唯一一个很棒的工具是来自 Autodesk 的 MeshMixer，其中有一个名为 makesolid 的工具，它负责关闭孔和自相交面等。很棒的工具，我现在可以使用 libigl 很好地生成 tetgen！
我以前问过这个问题，但是在 github here , but never got farther into it. Now I have picked it up, and am trying to get this mesh tetrahedralized, but I keep getting errors see below. Ahlthough the statement clearly says "Found a segment and a subface intersect", I don't know how would I go about resolving that ? The question here is more precisely how to find if mesh has an open boundary and how to locate that and fix that in perhaps blender ? I am asking about open boundary since "camel.off" which clearly has an open boundary gives the same error. I even tried using another geometry processing tool but it showed no holes found, and its auto repair didn't work either.
有没有办法在尝试创建四面体化网格之前自动进行更多预处理以确保顺利运行？请指教。
请注意，艾米丽的嘴唇有 self-intersecting 个面孔。这可以按照@Dominik Mokris 的建议在 MeshLab 中查看。然而，在删除这些面之后，如果没有额外的面变成self-intersecting，很难正确填充它。看到 tetgen 的主要错误之一是关于 self-intersection。我发现的唯一一个很棒的工具是来自 Autodesk 的 MeshMixer，其中有一个名为 makesolid 的工具，它负责关闭孔和自相交面等。很棒的工具，我现在可以使用 libigl 很好地生成 tetgen！