![]() ![]() The viDoc RTK rover is handheld and portable, making it easy to use around a siteįor this example, NaviGate used an iPhone 12 Pro, which has a LiDAR sensor built in. With select iOS devices, this workflow also includes LiDAR data which can be processed with Pix4D software ( PIX4Dmatic even offers the option to merge iOS LiDAR data and photogrammetry into the same point cloud). As a result, data collected with the viDoc and PIX4Dcatch includes highly detailed photos that are tagged with RTK data to ensure centimeter accuracy. During data collection with the free ground scanning app PIX4Dcatch, the viDoc tags images with RTK data via local NTRIP networks. The viDoc RTK rover is a handheld device that attaches onto select iOS and Android devices. Complete 3D terrestrial scan with RTK accuracy This data was processed with PIX4Dcloud, the online photogrammetry software. The final results included 110 RGB pictures that were exported as. The team were lucky and had optimal flight conditions with moderate cloud cover and a mild temperature of 15 degrees Celsius (59 degrees Fahrenheit). The photos from the sensors were transferred via the SD card to a computer. The drone flew at a height of 80 meters and gathered images with RTK accuracy. The drone flew an area of 1.5 hectares with the smart oblique capture mode. This hardware can be used for aerial surveys for industries like construction (for example, tracking progress or measuring stockpiles with drones) or land and terrain surveys. The Zenmuse P1 camera is typically mounted on a DJI Matrice 300 RTK. The coordinates of these points would be compared with results generated by the drone and P1 dataset and viDoc dataset to test their accuracy. The team also measured the coordinates of 15 precise points with a Focus 35 total station. This was used to gather geolocation data and received corrections from the NTRIP service used on-site. They gathered ground-based measurements with a GNSS receiver (Spectra Precision SP85). To be sure of the accuracy of results, the NaviGate team first needed to gather a base dataset they would use as a reference. The RTK datasets would be compared with a dataset from the XIAOMI 11 Lite to compare the accuracy with a non-RTK workflow.Ī base dataset would be used to compare the accuracy of an RTK drone vs an RTK rover The NaviGate team set out to collect data with a DJI Matrice 300 RTK (and P1 mounted), as well as with the viDoc RTK rover attached to an iPhone 12 Pro. It’s a one storey building with some plaster and clay blocks in its structure. The structure was build and damaged in World War 1 in a sloped area with a gradient ranging from 5 to 7% in the surrounding land. The structure being surveyed is an old powder house on Swarog Hill in the region of Krakow. Variations of surveying workflows for 3D models This included comparing the Zenmuse P1 camera mounted on a DJI Matrice 300 RTK with the viDoc RTK rover. They wanted to create 3D models of the site with multiple tools to compare workflows and the accuracy. NaviGate’s team set out for a concrete bunker that was built in World War 1 that is partly demolished. ![]() They tested several different tools to create their own reference for how accurate the technology is. Their work in distributing specialized surveying software and hardware means they are experts in creating and providing accurate 3D models that are ready for use in construction, surveying, and more. ![]() NaviGate is a professional surveying and GIS company based in Poland that supply drones and drone mapping software. However, when just looking at a single site that needs a detailed survey, could the viDoc compete with an aerial drone survey? The P1 is a camera mounted on the DJI Matrice 300 RTK The P1 is a 45MP camera used by some professional photogrammetrists completing surveys with drones.įor typical large surveying projects, a drone is the better way to go. Whilst the rise of new smartphones including LiDAR sensors is an exciting development for terrestrial surveying, the sky is being unlocked with new, specialized hardware from 4G drones to powerful cameras. New advances in photogrammetry and LiDAR technology are bringing new workflows and functionalities to reconstruct reality in 3D. ![]()
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