Show HN: OpenSfM v1.0
OpenSfM v1.0 is a major update to the Structure-from-Motion engine formerly behind OpenDroneMap and WebODM. It offers faster, GPU-accelerated SfM and dense reconstruction, a new DSM and orthophoto pipeline with GeoTIFF export, and a revamped quality report. The release focuses on aerial and GIS workflows, supporting very large scenes and producing GIS-ready deliverables from raw photos.
Background
- OpenSfM is open-source "Structure from Motion" software: it reconstructs 3D geometry from overlapping 2D photos — typically drone-captured terrain or buildings.
- The original was created by Mapillary (street-imagery, acquired by Meta in 2020) and became unmaintained. This v1.0 is a community revival by former maintainers.
- OpenSfM powers OpenDroneMap and WebODM, widely-used open-source toolchains that turn drone photos into GIS deliverables: 3D point clouds, elevation maps (DSMs), and orthorectified images (GeoTIFFs).
- Key improvements: C++ SfM loop + GPU OpenCL matching for speed; randomised bundle adjuster for very large scenes; new dense cloud and orthophoto pipelines exporting LAS/LAZ/PLY and GeoTIFF.
- Target audience: drone-mapping professionals, surveyors, and geospatial analysts who need open-source processing of aerial imagery into measurable map products.