Mesh

Filter > Mesh panel contains filters for mesh surface reconstruction from points.

Mesh

Surface Reconstruction

Uses Open3D - Poisson Surface Reconstruction

For correct results, points must have correct normals.

Surface Reconstruction

Screened Poisson

Uses MeshLab - Surface Reconstruction: Screened Poisson

For correct results, points must have correct normals.

Screened Poisson

Find Contours

Rasterize points along world Z direction, render to a texture using Point Size and Resolution, optionally Interpolate missing pixel values, compute Contours from pixel depth data in Range and Levels and add them as mesh object.

So for example, if you need contour at every 10cm in point cloud 1-2m section that has 3m total height from world origin, set Range [1.0, 2.0]m and Levels 11 (1m/0.1m + 1) (+1 to have 10 sections between 11 contours)