Stream Terrain

STREAM is a native Windows desktop application for visualizing, measuring and analyzing drone-mapping and GIS terrain data. It loads large DEMs/DSMs, orthophotos, CAD drawings (DXF) and point clouds (LAS/LAZ) and renders them in a smooth, GPU-accelerated 3D environment with adaptive streaming — multi-gigabyte datasets stay fluid and interactive at full resolution, with no downsampling.

Data import & layers Import GeoTIFF elevation and orthophoto rasters, DXF vector drawings and LAS/LAZ point clouds (rasterized on import to ground DEM, surface DEM or orthophoto). Stack multiple DEMs and orthophotos in a single project with per-layer visibility, opacity and priority. Coordinate system (CRS) handling with on-the-fly reprojection, and fast native caching so projects reopen instantly.

Measurement & drawing Points, 3D polylines with elevation profiles, area polygons, distance/height/area measurements — all draped precisely on the terrain with snapping, editable coordinates and animated, easy-to-read labels.

Terrain analysis Slope, aspect, viewshed and line-of-sight analyses, contour generation, hydrology tools (flow paths, watersheds), sun & shadow analysis and change detection between two surveys — computed at full resolution and displayed as live overlays on the 3D terrain.

Volumes & earthworks Cut/fill volume computation against multiple reference surfaces, stockpile management with a material library and print-ready PDF reports, and cross-section based volume tables exported to CSV/Excel and DXF.

Design modules Road and corridor design with horizontal alignment (circular curves and clothoid transitions), vertical profile, typical section with superelevation, cross-sections and a mass haul view. Grading and benched slopes: find the platform elevation where cut equals fill, set bench height, berm width and batter angle, and compute the daylight line against the surveyed ground. Blast pattern design on a surveyed bench with collar elevations read from the DEM, burden relief measured in 3D against the free face, and a hole table exported to Excel/CSV.

Terrain editing & scenarios Flatten, patch and re-triangulate terrain areas non-destructively — edits live in the project and can be exported baked into GeoTIFF. Keep multiple terrain scenarios (before/after, design alternatives) in one project and switch between them instantly.

Export & reporting DXF (including TIN surfaces), point CSV, area-cropped GeoTIFF, contour DXF, KMZ, and professional PDF map sheets and reports.

Everything runs offline — the data never leaves the machine. STREAM is built for surveyors, mining and construction teams, and drone-mapping professionals who need CAD/GIS-grade measurement, analysis and reporting in one fast, focused tool. The interface is fully translated into 6 languages (English, Turkish, Spanish, French, Chinese, Russian) and supports both metric and imperial units. Academic use is always free.