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Classify LiDAR in the browser

Open a .las or .laz tile, run Auto-classify, then correct the result with rectangle, lasso, polygon, brush and cross-sections. Files never leave this computer.

Open LAS/LAZ

Runs a TerraScan-style macro: noise → ground → water / roads → bridges → wires → vehicles → fences → buildings (trees on roofs separated) → structures → vegetation → small structures. Every step is a measurable rule; untick any you don't want. Points you classified by hand are kept.

Output classes Never change classes

Keep my manual edits Run auto-classify as soon as a file is opened

Parameters

After auto-classify, every detected object is measured and checked against simple rules — size, height, single/multiple returns, distance to wires. Objects that break a rule are listed below with the rule, the numbers and a suggested class. You decide: accept, keep, or open it and edit.

1 · Rule check of objects Report trees closer to a wire than m Run the check after every auto-classify

2 · Needs human review

Nothing yet.

3 · Accuracy

A LAS/LAZ file holds no right answers, so accuracy needs either a classified reference of the same area (a tile an operator finished, or national LiDAR) or a spot check: random points from every class that you mark right or wrong.

Points per class

The rules

Building lower than the minimum building height, or with a roof smaller than the minimum area (→ vehicle / unclassified), or with many multiple returns (→ vegetation).
Tree that is tall and thin with few multiple returns (→ structure), or a wide one with single returns only (→ building), or close to a wire (clearance report).
Structure shorter than the minimum, unusually wide, or with no wire nearby.
Wire piece that is short and sparse (→ vegetation), or that comes down near the ground.
Vehicle that is unusually long or high.
Other object that looks like a building, a vehicle, a pole next to a wire, or vegetation.

Limits come from Automate → Parameters.

Individual objects built from the current classes: buildings, trees, poles and wires. Click a row to zoom to it.

#	Kind	Class	Height	Size	Pts

Add structure top / bottom synthetic points (classes 46 / 47) for structures ≥ 10 m (33 ft) tall to the exported LAS