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.
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.
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.
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.
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).
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.
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.
Professional Software
Commercial and cloud tools offer better UX, automation, support, and faster processing. Ideal for production workflows and time-critical projects.
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.
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.
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.
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.
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.
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.
| 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) |
Legend: Green = Good | Orange = Medium | Blue = Partial | Gray = Standard
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 |
Cloud Tip
With cloud tools (RealityCapture, Pix4D, DJI Terra), you don't need expensive local hardware. Processing runs on servers, you pay per project. Ideal for occasional use.
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: Self-Managed
- +Full control over parameters
- +Cost-effective for many projects
- +No privacy concerns (local)
- -High hardware investment
- -Technical knowledge required
- -Long processing time (no GPU)
Service: Outsourcing
- +No hardware costs
- +Fast processing
- +Professional QA
- +Support & advice
- -Expensive for many projects
- -Privacy dependency
Voxelia Recommendation
For 1-5 projects/year: outsource to Voxelia (€45-500 per project). For 10+ projects/year: invest in software + hardware (€5-10k upfront, but more cost-effective long-term).
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