The evolution of photogrammetry has accelerated as expectations for image quality have risen. Professionals now assume they’ll be able to take multiple aerial shots of a site and collect accurate visual data, so the industry has come to lean heavily on software, drones and photogrammetry. As a result, teams have upgraded from taking photos with handheld cameras to commanding drones that can compile data from numerous angles.
From an article in built in by Jeff Link.
Analyses from Data Bridge Market Research predict the photogrammetry software market will see a compound annual growth rate of more than 13 percent between 2021 to 2028, with photogrammetry software expected to reach a market value of $2.56 billion by 2028.
“I think the big revolution has been with drones,” Tristan Randall, a strategic project executive at the architectural software company Autodesk, said. “In the context of a construction project, for example, where you want to monitor your site conditions, you can purchase drones that cost a couple thousand dollars. So capturing the photogrammetric data has become much, much easier.”
Photogrammetry does not require highly sophisticated cameras, Randall said. It can be performed using digital single-lens reflex (DSLR) cameras, video reels, satellite photos or even images captured with an iPhone — virtually any digital camera that can store multiple images.
But the low-cost availability of drones has opened a once largely terrestrial application to a range of new airborne possibilities — from creating large-scale maps to assessing crop health or planning for emergency relief operations to producing lifelike 3D models of buildings, roadways and flood zones.
A photogrammetrist can buy a serviceable drone for as little as $800, said Christopher Kabat, the owner and founder of the drone consultancy ProAerial Media. Once programmed, the drone can capture hundreds of photos of a large-scale real-world environment, like a subdivision or city district, in hours.
Prior to the flight, the pilot selects the flight path and the number of photos the camera will take, based on their desired output resolution. Outfitted, typically, with a one- to two-inch diameter camera on a rotating gimbal, the drone passes back and forth over the landscape taking pictures — hundreds of them — for later processing.
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