DIGITAL SURFACE MODEL
STREAM opens Digital Surface Models — the top surface including buildings, canopy and structures — and lets you measure, compute volumes and analyze them like any elevation grid, straight from GeoTIFF or a point cloud.
A Digital Surface Model (DSM) represents the top of everything on the ground — terrain plus buildings, trees and other objects. It differs from a DTM (bare earth) and is often what you get first from photogrammetry or LiDAR.
DSMs are ideal for volumes of piles and structures, line-of-sight and canopy work. STREAM builds a DSM from all points of a cloud, or opens one directly.
Open a DSM from GeoTIFF, or build one from all points of a LAS/LAZ cloud on import.
Measure stockpile and cut/fill volumes on the surface model, above buildings and piles.
Run slope, viewshed, line-of-sight and sun & shadow on the DSM — where the top surface matters.
Use a DSM alongside a bare-earth DTM to separate objects from terrain.
A DSM (Digital Surface Model) includes buildings and vegetation — the top surface. A DTM (Digital Terrain Model) is bare earth. STREAM opens and builds both.
Yes. STREAM builds a surface model from all points of a LAS/LAZ cloud on import, and a bare-earth model from ground-classified points.
Yes. Stockpile and cut/fill volumes work on the surface model, which is ideal for piles and structures.
Free beta for Windows x64. Works fully offline with GeoTIFF, LAS/LAZ and DXF.
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