OpenDroneMap

Open-source photogrammetry toolkit that turns drone images into maps and 3D models

License

AGPL-3.0

Overview

OpenDroneMap (ODM) is an open-source toolkit for processing aerial drone imagery into maps, 3D models, and point clouds. It handles the complete photogrammetry pipeline — from raw images to orthophotos, digital elevation models, and textured 3D meshes. Used by surveyors, farmers, conservationists, and inspection teams worldwide.

OpenDroneMap is the leading open-source alternative to commercial photogrammetry software like Pix4D and DroneDeploy. It takes a set of overlapping aerial photographs captured by any camera-equipped drone and processes them through a complete Structure-from-Motion (SfM) and Multi-View Stereo (MVS) pipeline.

The output includes georeferenced orthophotos (bird's-eye view maps), Digital Elevation Models (DEMs), 3D point clouds, and textured 3D meshes. These deliverables are industry-standard formats used in surveying, agriculture, construction monitoring, environmental conservation, and infrastructure inspection.

ODM can be run as a command-line tool, through WebODM (a user-friendly web interface), or via NodeODM (a processing API for integration into larger workflows). The project handles ground control points (GCPs), supports multi-spectral imagery for vegetation analysis (NDVI), and can process datasets of thousands of images on standard hardware.

Why it matters

Commercial photogrammetry software charges per-image or requires expensive annual subscriptions ($3,000-10,000/year). OpenDroneMap eliminates these costs entirely, making aerial mapping accessible to small businesses, nonprofits, and developing-world organizations that couldn't otherwise afford it. The AGPL license ensures the tool remains freely available while the WebODM interface makes it usable by non-technical operators.

Problem it solves

Drone operators often capture thousands of aerial images but need specialized — and expensive — software to turn them into actionable maps and models. OpenDroneMap provides the complete processing pipeline at zero software cost, allowing inspection teams, surveyors, and researchers to maintain full control over their data without uploading to third-party cloud services.

Key takeaways

• Complete photogrammetry pipeline from raw images to orthophotos, DEMs, and 3D models
• Eliminates $3,000-10,000/year commercial software costs for aerial mapping
• WebODM provides an accessible web interface for non-technical users
• Supports ground control points and multi-spectral imagery for precision applications
• Processes thousands of images on standard hardware without cloud dependencies

Who it is for

• Land surveyors and GIS professionals
• Agricultural consultants
• Environmental researchers
• Construction and infrastructure teams
• Humanitarian and conservation organizations
• Drone service providers

Limitations

• Processing large datasets requires significant RAM and compute time
• AGPL-3.0 license requires sharing modifications to the software itself
• Accuracy depends heavily on image overlap and ground control points
• Not real-time — processing happens after flight, not during
• Limited direct integration with flight controllers