Convert Point Cloud to Mesh (Open3D)

@intel1 VersionGenerate

Reconstructs a triangle Mesh from an aligned PointCloud using Open3D Screened-Poisson or Ball-Pivoting reconstruction, estimating point normals when the input lacks them and cleaning degenerate / duplicate geometry before emitting.

How it fits

Typical backends

A single-view depth backend lifts an image into a metric point cloud, which is then surfaced into a watertight mesh for export or rendering.

A reconstructed scene cloud is re-meshed and re-projected: reconstruction yields a clean surface, and a planar projection stage consumes the result for floor / wall fitting.

Caveats

Hard constraintBoth algorithms require per-point normals; when the cloud carries none and normal estimation is disabled the output is an empty Mesh with no error raised. See estimate_normals.
Parameter interactionPoisson yields a watertight, smooth surface while ball-pivoting yields sharper detail that may leave holes; method is a closed two-value choice and any value outside `poisson` / `ball_pivoting` aborts startup.
CostReconstruction runs entirely on CPU — Open3D's surface reconstruction does not use a GPU — and a deeper Poisson octree (poisson_depth) multiplies both triangle count and memory pressure.
Parameter interactionA value of `0.0` for density_quantile keeps every Poisson vertex; positive values trim the lowest-density vertices below that quantile to remove noise.
Parameter interactionball_pivoting_radii are interpreted in the cloud's own input units; an empty list auto-derives radii (1.5x and 3.0x the average nearest-neighbour spacing), so a cloud at the wrong scale silently produces a sparse or empty mesh.
I/O contractThe emitted mesh is cleaned of degenerate triangles, duplicate vertices, duplicate triangles, and unreferenced vertices; UV texture coordinates are never produced.
FallbackNon-finite (NaN / Inf) points are dropped at the input boundary before reconstruction, so a partly-corrupt cloud still meshes its finite points and an empty or all-non-finite cloud produces an empty Mesh (zero vertices, zero faces) rather than an error.
State lifetimeEvery reconstruction setting is captured once at startup; runtime changes have no effect and require a redeploy.

Versions

a214d550latestdefault
Automated release
6/29/2026