3Dsurvey vs OpenMVG

3Dsurvey is photogrammetry software for processing and classifying surveying data. It creates 3D models, orthophotos, digital elevation models, point clouds, and reports from sources including drones, cameras, GNSS, LiDAR, SONAR, geospatial data, and real-time telemetry. Its extraction tools cover CAD drawing, volume calculation, contour lines, profile lines, and cross sections. Listed formats include TIFF, JPG, PNG, KMZ, OBJ, PLY, E57, LAS, DXF, PDF, TXT, XYZ, DOC, XML, and MP4. Results can be uploaded to 3Dsurvey Cloud Viewer and shared by link for viewing on any device. The maker highlights construction, land surveying, and surface mining. A 14-day trial offers full functionality without data limitations, and a free student license is available for individual non-commercial use. Subscription pricing is €225 per month, billed monthly, or €187.50 per year billed yearly at €2,250, excluding taxes. A perpetual license costs €3,399 one time, excluding taxes.

OpenMVG is an open-source C++ library for multiple-view geometry, 3D computer vision, and structure from motion. It provides libraries, binaries, and pipelines for reconstructing 3D scenes from images. Library areas include image manipulation, feature description and matching, feature tracking, camera models, multiple-view geometry, robust estimation, and structure-from-motion algorithms. Its binaries can initialize scenes, detect and match features, perform reconstruction, and export scenes to other multiple-view-stereo frameworks. Those frameworks can compute dense point clouds or textured meshes from exported scenes. OpenMVG is released under the Mozilla Public License 2.0 and is listed as free. The project says it aims to support reproducible research through readable implementations of classic and state-of-the-art algorithms. It is designed for reading, learning, modification, and use, with test-driven development and samples. Tutorials cover data structures, library use, and processing an image dataset. Platforms listed are Windows, macOS, Linux, iOS, Android, and self-hosted, with desktop deployment, API access, point-cloud export, and ground control point support.