only use the drone's GPS or also ground beacons to reference for elevations etc? So in this case it really depends on how they did the photographing and georeferencing, i.e. as of the of flying the drone) compared to commercially available options which usually have some delay between photographing and updating imagery. It worked really well but it does take some time to render the features etc., but it is far more cost effective and faster than satellite data for relatively small areas to get an overview of the current situation (i.e. One thing they use are ground beacons to determine accurate elevations as these points serve as a reference for how far above the ground the drone is flying at any given point in time for improved accuracy. I have used PhotoModeler and GoPro cameras to extract data used for creating boat covers (well over 200) and it seems to work fairly well, so that's why I am curious.Ĭoincidentally I happened to be at a user day of GlobalMapper (a GIS program) earlier this years where one of the workshops was from a company using drones and Agisoft Photoscan to create terrain models. Speaking of drones, has anybody used one in combination with a photo modeling program (such as PhotoModeler) to extract terrain data ? I assume a decent drone model such as the Phantom 4, having a good camera 4K video and is able to extract decent stills. Provided that the data are accurate enough, a simply point cloud should work fine in the DTM to generate a 3D terrain model. So again usability of this data is the big question to answer first before spending the money. and not of the ground given their comment they are providing a DSM and not a DTM. The other option is to use the XYZ points to create the site model instead of contours, but the Z value will most likely be the top of the trees, buildings etc. Because VW does support this in Landmark and Architect my suggestion would be to always use shapefile over dxf if possible if georeferencing is used) (BTW, AutoCAD Civil 3D can import shapefiles so the argument for DXF is a bit inaccurate in this case, it only applies for CAD programs that don't support georeferencing. So the big question is whether the contours would be useful for your purposes anyway.Īssuming you still want to use the data and you need contours, then by all means do select shapefile as it will contain the georeference information and should reproject to your desired coordinate system better than a dxf. elevations without the objects as trees etc. What you probably need is a DTM = Digital Terrain Model, i.e. I don't see the high definition image being an issue, but I'm unsure of the 3d data.ĭSM = Digital Surface Model which shows elevations at the heights of e.g. Can anyone confirm this? The service is $750+ 100/month for access to this online software which I imagine I'll use only once. dxf will give me some contours that I can work with. I have provided a couple of shots from the drone Deploy website and I'm pretty sure that importing. My question is whether I can this exported data and make it useful within VW. This drone pilot uses a web based software to share this information with his clients, which I think is a pretty sensible approach. I have contacted a company that will fly a drone and collect data for me at a pretty reasonable price when compared to traditional surveying. I'm in need of some accurate elevation data as well as some high definition images (overhead), a drone is one obvious choice. I'm starting a project on a piece of agricultural land (creating a agri-tourism concept) which is about 10-15 acres in size. I have a question here that I'm hoping someone can help me with.
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