The company is able to achieve this because it has built a proper photogrammetric system from the start and then adapted it to an airframe. Apart from that, DroneMetrex have addressed the ever-present issues of camera geometry errors that are introduced through the natural physics of flight from a small airframe with a camera system. Any such drone flights will produce rapid and aggressive movements of the camera array in tip, tilt and yaw – plus forward and side image motion. If these movements are not eliminated during image capture then this will translate to large random errors which no amount of post-processing software can rigorously solve. DroneMetrex have successfully resolved those issues with the integration of the in-house developed unique hardware and software. Additionally, the company has addressed the forward motion and side motion compensation of image capture.
Tom Tadrowski, Executive Director of DroneMetrex, states: “The TopoDrones are unmatched for mapping accuracy, can be flown autonomously and manually. So for mapping, you start the input with a near-nadir, no-crab, motion-blur-less image. Isn’t this the fundamental input for any accurate photogrammetric mapping?”
DroneMetrex Pty Ltd is a company specialising in the autonomous data acquisition, near real-time data feeds, and accurate survey and photogrammetric mapping information services from “Drones”. This provides alternative solutions to costly data acquired from aircraft or similar airborne and/or vehicular platforms over areas that are not economically justified to be captured by such large aircraft, or may be difficult and/or dangerous for “manned” aircrafts or vehicles or ground survey teams. With its TopoDrones the company produces truly accurate mapping data – 25mm accuracy in height – reliably, repeatedly, accurately.