12/11/2023 0 Comments Drone deploy near power linesSporadic clouds can lead to variable lighting. It’s much better to fly when it’s either sunny or overcast. The long shadows created early in the morning and evening can wreak havoc with the terrain model results. In an ideal world all flights would be flown with the sun overhead, but in northern (or southern) areas the sun doesn’t get high in the sky for months at a time. It’s more efficient to be moving forward than just hovering. Remember, most of the power goes to keeping the drone in the air. If you’re altitude is any lower than 200’ then slow the aircraft down or significant motion blur can occur.Īlso, it’s good to note that flying slow doesn’t increase battery longevity for multi rotor drones. If you’re flying at 200’ or above with good light, 30 km/h is safe even with the small Mavic Mini. The few exceptions are if flying in low light, low altitude, or if the software being used doesn’t compensate for rolling shutter cameras. There’s not usually any advantage to flying slow. The speed of the drone can be set in most autopilot apps. If you’re mapping buildings and steep terrain pairing the grid pattern from tip #4 and an oblique camera angle will generate the best results.Īs a general rule, keep your camera down and focus on mowing the lawn. This results in oblique* imagery rather than nadir* imagery. In these cases, raising the camera by 10 or 15 degrees can be beneficial. However, if flying over steep terrain or trying to generate 3D models of buildings and other objects, the camera angle will need to be adjusted. Most of the time mapping with the camera straight down is ideal. The additional data helps the algorithms create better maps. It can be very helpful to create 3D models of buildings, or when flying very hilly and rolling terrain. I will fly my drone in a grid pattern when mapping urban environments, areas with buildings or when I want the best accuracy I can achieve. When mapping uniform areas such as dense forest, snow, and uniform crops, increase overlap up to 85/85, to obtain clear data.įor example flying Quarry Lake at 85/85 will take 12:37. Flying an area at 85/85 will take over 2.5 times longer than a flight that is overlapped at 60/60.įor example, general mapping of construction sites, and diverse terrain use 75/75 to get the most accurate information. In some circumstances, you may need your overlap to be as high as 90/90. A general standard overlap is 75% front overlap and 75% side overlap. Too little overlap and there will be holes in the data, or inaccurate data. Overlap is key to photogrammetry processing. In the example above, you can be certain that everything within the red box will turn out well in the final processed map. Fly a larger area than you think you need When your flight lines extend to the edge of the area that you need to map, you’ll be safe. Another helpful tip is to pay close attention to the flight lines rather than the box itself. So what does this mean? If for example you want to map a 10 acre property, draw the autopilot box 50’ (15 m) larger than the area you need to map. The algorithms need to ‘see’ the ground from several aerial photos in order to create a good-looking aerial image and 3D terrain. 2 Fly a Bigger Area than you needĭrone Mapping algorithms love lots of data. No matter which app you use, flying with an autopilot is our number 1 tip to make a great drone map. Other autopilot apps worth mentioning are: Map Pilot, DJI Ground Station Pro, Dronedeploy, Pix4D Capture, Drone Harmony etc. One of our recommended apps is dronelink because it works on both iOS and Android. They all collect photos for drone mapping but, there are subtle and occasionally, major differences, that can make or break an app. Take a look at our review of 9 auto pilot apps and decide which will be the best for you requirements. With so many DJI drone autopilot apps on the market, it can be difficult to pick the best one for your mapping needs. Fine tune by adding nodes to your boundary box and changing settings. Draw a box and the app will create flight lines and picture locations, automatically. Most mission planning and autopilot apps do a great job of simple task planning. The results are disappointing at best, even if the photo looks ok, there are most likely flaws in the 3D model. Admiration because it takes a lot of effort, and concern because it almost never works. I feel both admiration and concern when I see and hear of pilots collecting data by manually flying the drone while taking pictures. These tips will also help you get the impressive, clear and usable drone maps everyone is looking for. Following the tips below, will help avoid wasting your time and money. It all starts will collecting good images. So you want to improve your drone mapping and make great drone maps? While making quality maps isn’t too complex, there are a few things you should be aware of before you launch your drone.
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