Photogrammetry: Making Measurable 2D and 3D Data From Images

Photogrammetry, is also known by a few different terms including: Reality Capture, Structure From Motion (SFM) and/or Digital Twin creation. It is the science and practice of using photos (images) to create 3 dimensional quantitative models from real life. It is used in many industries that deal with measurements such as architecture, engineering and construction, but it also is used to tell stories, such as in motion pictures, video games, and now Augmented and Virtual Reality (AR / VR). Photogrammetry works through utilizing parallax,…

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Three Aerial Imagery Sources: The What and When

There are three main aerial imagery sources. The modality depends on the coverage area, and required resolution: Satellite (Global), Crewed Aircraft (county, 3,000+ acres), and Drone: Fixed Wing (neighborhood, 100-3,000 acres) and Multirotor (1-100 acres). Satellite has the highest frequency of data collection and covers the greatest area, but is the least resolute. Crewed Aircraft flies at 1,000 feet to 10,000 feet and can carry big (expensive), upwards-of-500MP sensor arrays. Drones are the most resolute and least-expensive-to-deploy solutions. While it's possible to put a…

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