What is Photogrammetry Software?
Photogrammetry software is specialized computer software that converts 2D images into 3D models. Based on Structure from Motion (SfM) principles: by recognizing the same features in multiple images, these tools reconstruct 3D space and object surface geometry.
Three categories exist: free open-source tools (Meshroom, COLMAP), commercial desktop software (Agisoft Metashape, 3DF Zephyr), and cloud-based solutions (RealityCapture, Pix4D, DJI Terra). Choice depends on your needs: budget, accuracy, automation, and hardware availability.
Quick answer before the comparison
| Question | Answer |
|---|---|
| Best free tool | Meshroom for a GUI start, COLMAP for maximum control. |
| Best drone mapping option | Pix4D or WebODM when orthophotos and GeoTIFF matter. |
| Fastest proof | A paid Voxelia pilot shows output, QA and target format on your own dataset. |
Fast buying decision
| Path | When it fits |
|---|---|
| Start free | Try Meshroom, COLMAP or ODM when time, GPU setup and troubleshooting are acceptable. |
| Buy a pro stack | Choose Metashape, RealityCapture or Pix4D when processing becomes regular in-house work. |
| Test a service | Process one real image set from €45 before buying software, hardware and training. |
Free Software in Detail
Free options are ideal for beginners, low-budget projects, or experts needing full control. But they require technical knowledge and local GPU power.
| Tool | Price model | Description | Highlights |
|---|---|---|---|
| Meshroom (AliceVision) | Free (Open Source) | Meshroom is the most accessible open-source tool with graphical UI. Developed by AliceVision, based on proven SfM algorithms. Ideal for beginners with NVIDIA GPUs. Weakness: error handling, no cloud processing. | CUDA-GPU accelerated · Unlimited images · Desktop app with GUI · Automatic calibration |
| COLMAP | Free (Open Source) | COLMAP is the scientific standard for SfM and delivers highest reconstruction precision. Used in 1000s of research projects. Learning curve: steep. Best for experts and developers needing GPU acceleration. | Scientific standard · CUDA/OpenGL optional · Highest precision · Command-line based |
| 3DF Zephyr Free | Free (50 Image Limit) | 3DF Zephyr Free is ideal for beginners: intuitive GUI, stable processing, free. 50-image limit works for small projects. Paid version (Lite/Pro) for larger projects (€199-499). | Beginner-friendly · 50-image limit · Windows/Mac/Linux · Good documentation |
| OpenDroneMap (WebODM) | Free (Self-hosted or Cloud from €50/month) | OpenDroneMap is specialized for drone photogrammetry. WebODM is the free web version. Strength: automatic georeferencing, orthophoto export, perfect for surveying/GIS. Weakness: surface reconstruction not optimal. | Specialized for drone imagery · Orthophoto export (GeoTIFF) · WebODM browser interface · Cluster-capable |
| CloudCompare | Free (Open Source) | CloudCompare is not a reconstruction tool but the best post-processing tool for point clouds. Use it to clean, filter, and transform SfM results. Essential in every workflow. | Point cloud viewer · Post-processing tool · No reconstruction (processing only) · Plugin architecture |
Professional Software
Commercial and cloud tools offer better UX, automation, support, and faster processing. Ideal for production workflows and time-critical projects.
| Tool | Price model | Description | Highlights |
|---|---|---|---|
| Agisoft Metashape Pro | €3,499 (one-time) / €699/year (license subscription) | Agisoft Metashape is the industry standard for professional photogrammetry. Costs a lot but reliable, fast (with GPU), and best-in-class error handling. Automatic calibration, LOD models, cloud processing (separate license). Best choice for production workflows. | Industry standard · GPU accelerated (CUDA/OpenCL) · Unlimited images · Advanced filtering · DXF/DWG/IFC export |
| RealityCapture | from €250/3 months (cloud-based), Desktop from €500/year | RealityCapture is the fastest solution (10-20x faster than local tools). Cloud-based, no local hardware needed. Pay-as-you-go pricing (~€250 for 3 months basic use). Ideal for time-critical projects and agencies. Desktop version cheaper but less automated. | Fastest processing (10x faster than Metashape) · Cloud-native (no local hardware needed) · Automatic meshing · Real-time preview · CPU-optimized (less GPU cost) |
| Pix4Dmapper | from €260/month, Pro €390/month | Pix4Dmapper is the market leader for drone photogrammetry and surveying. Excellent at automatic processing, georeferencing, and GIS integration. Cloud-only, no desktop version. Costs more than Metashape but less complexity. Best-practice for drone projects. | Specialized in drone surveying · Automatic processing · GeoTIFF orthophoto (GIS-ready) · RTK integration · Mobile app (flight planning) |
| DJI Terra | Free (Basic) / €149/year (Pro) | DJI Terra is ideal if you use DJI drones. Free version works for simple projects. Pro version (€149/year) has similar Pix4D functionality at 1/5 the price. Tight integration with DJI hardware, automatic processing. | Integrated with DJI drones · Mobile flight planning · Fast cloud processing · Comparable to Pix4D · Cheap for DJI users |
| ContextCapture (Bentley) | Pricing on request (Enterprise) | ContextCapture is Bentley's enterprise solution for large projects and BIM integration. Cloud-based, automated. Pricing starts at 5-figures. Ideal for infrastructure projects, large real estate portfolios, or city models. | Cloud-based · Enterprise-focused · Automatic meshing & texturing · BIM integration (IFC export) · Scalable for batch processing |
The Big Comparison
Detailed comparison of all leading tools across 9 criteria: price, max images, GPU acceleration, accuracy, survey formats, orthophoto export, learning curve, cloud processing, and API/automation.
| Criterion | Meshroom | COLMAP | 3DF Zephyr Free | OpenDroneMap | Metashape Pro | RealityCapture | Pix4Dmapper | DJI Terra | ContextCapture |
|---|---|---|---|---|---|---|---|---|---|
| Price (2026) | Free | Free | Free (50 images) | Free | €3,499 / €699/year | €250/3 mo. (Cloud) | €260-390/mo. | €149/year (Pro) | On request |
| Max image count | Unlimited | Unlimited | 50 (Free) | Unlimited | Unlimited | Unlimited (Cloud) | Unlimited | Unlimited | Unlimited |
| GPU acceleration | CUDA-only | Optional | Yes | Yes | CUDA/OpenCL | Cloud | Cloud | Cloud | Cloud |
| Accuracy | High | Very High (Scientific) | Good | Good | Very High | Very High | Very High | Very High | Very High |
| LAS/LAZ export (surveying) | Yes | Yes | Yes | Yes | Yes (Pro) | Yes | Yes | Yes (Pro) | Yes |
| Orthophoto (GeoTIFF) | No | No | No | Yes (specialized) | Yes | Yes | Yes (specialized) | Yes | Yes |
| Learning curve | Low | Very steep | Low | Medium | Medium | Low | Low | Low | Medium |
| Cloud processing | No | No | No | Yes | Optional (extra) | Yes (native) | Yes (native) | Yes (native) | Yes (native) |
| Automation & API | Yes (CLI) | Yes (CLI) | No | Yes | Yes (REST API) | Yes (REST API) | Yes (REST API) | Yes (REST API) | Yes (REST API) |
Hardware Requirements
Required hardware depends on project size (image count) and reconstruction speed. Typical requirements by use case:
| Level | CPU | RAM | GPU | SSD |
|---|---|---|---|---|
| Entry Level (small projects, <100 images) | Intel i5 / AMD Ryzen 5 (6+ cores) | 16 GB | NVIDIA GTX 1660 or better (optional) | 256 GB |
| Standard (Production, <500 images) | Intel i7/i9 / AMD Ryzen 7/9 (8+ cores) | 32 GB | NVIDIA RTX 3060 or better (12+ GB VRAM) | 512 GB - 1 TB NVMe |
| Professional (High-performance, <2000 images) | Intel Xeon / AMD Threadripper (12-16+ cores) | 64-128 GB | NVIDIA RTX 4090 or NVIDIA A100 (48+ GB VRAM) | 2-4 TB NVMe RAID |
Workflow: Photo to 3D Model
Typical workflow from fieldwork to final export:
Image Capture & Data Collection
Capture overlapping images with drone or camera. At least 70-80% forward overlap, 60-70% sideways. RAW format preferred. Ensure even lighting.
Image Import & Metadata
Import images into software. EXIF metadata auto-extracted (camera model, focal length, sensor). Optional: measure GCP (Ground Control Points) for higher accuracy.
Feature Matching & Sparse Reconstruction
Software finds commonalities (features) between images, calculates camera poses, creates sparse point cloud. This is the core of SfM (Structure from Motion).
Dense Reconstruction & Meshing
From sparse cloud to dense cloud (millions of points). Then 3D mesh (surface model) is automatically generated and textured.
Export & Post-processing
Export to desired format (OBJ, FBX, LAS, GeoTIFF). Optional: post-processing in CloudCompare (filtering, clipping) or CAD software.
Software or Service?
Choosing between DIY (self-managed software) and outsourcing (service providers like Voxelia) depends on several factors. DIY means full control over parameters, is cost-effective for many projects, and avoids privacy questions because everything stays local – but it requires a high hardware investment, technical knowledge, and long processing times without a GPU.
A service saves hardware costs and delivers fast processing, professional QA, and support – but becomes more expensive for many projects and makes you dependent on the provider's privacy practices.