How do I purchase DJI Terra?
DJI Terra Advanced and Pro can be
purchased through authorized DJI resellers, Quadrocopter.
For how long will my DJI Terra
license be effective?
DJI Terra Advanced and Pro plans are only valid for one year .
license comes into effect starting
the day the device is bound to DJI Terra.
What do I need to start using DJI
1. A Phantom 4 Series drone that
supports DJI Terra, several batteries;
2. A laptop, a microSD card and a card reader;
3. A compatible cable (a USB-to-USB
cable for Phantom 4, Phantom 4 Pro, Phantom
4 Advanced, a Micro-USB cable for Phantom 4 Pro+ V2.0, a USB-C cable for Phantom 4 RTK.)
How many computers can be bound to
the same account?
activation code can be used with a DJI account to activate a license, which can
be bound to a maximum of 3 Windows computers. The binding will be permanent and
once bound, cannot be unbound.
What are the computer system
requirements for 2D and 3D reconstruction with DJI Terra?
Windows 7 or above (64 bits) system is required when using DJI Terra.
hardware configuration: 16GB RAM and a NVIDIA graphics card with at least 4GB VRAM.
hardware configuration: at least 32GB RAM and at least a NVIDIA 1050 Ti.
these configuration requirements met, every additional 10GB of RAM will be able
to process 1000 additional 4K images. The higher the system configurations, the larger the number of
images that can be processed and the faster the reconstructions. The results
from the models generated will not be affected by different hardware
Which aircraft are supported by DJI
4 RTK, Phantom 4 Pro V2.0, Phantom 4 Pro+ V2.0,
Phantom 4 Pro, Phantom 4 Advanced and Phantom 4. The Phantom 4 does not support 2D Real-time Mapping.
Can I still use the paid features of
DJI Terra with no internet connection?
connected to the internet, log into your account and bind a computer to the
license so you can use the paid features of DJI Terra within the next 2 days
even if you are not connected to the internet.
and Aerial Photography
What is the difference between
Waypoints Mission, Mapping
Mission, and Oblique Mission?
Mission: plan a flight route and capture photos or videos at
waypoints along the route.
Mission: collect images of an area to reconstruct a 2D model.
Mission: collect images of an area from multiple camera angles to reconstruct a
there 5 flight routes when I plan an Oblique Mission in DJI Terra?
Terra’s Oblique Mission uses 5 flight routes to capture the same amount of data
as using 5 cameras simultaneously on a drone. The 5 flight routes correspond to
the 5 camera headings – downward, forward, backward, leftward, and rightward.
How do I
plan flight routes when there is no internet connection and the map cannot be loaded?
you have access to a mobile device that has an internet connection (such as a
cellphone), you can turn on the hotspot so that the laptop can be connected to
the site where you are operating has no internet signal, you can pre-plan the
flight route while you are indoors and have an internet connection, or manually
fly the drone around the area to be mapped to set boundaries points to plan
Ground Sample Distance (GSD)?
In photogrammetry and remote sensing, ground sample distance (GSD) in an aerial digital photo (such as an orthophoto) of the ground is the
actual distance on the ground captured as represented by pixels. The unit is
In the New Mapping Mission page, what
does Relative Height in Advanced Settings mean?
How is it
different from Mission Altitude in Basic Settings?
Height in Advanced Settings is the height of the takeoff point relative to the
area being mapped. Mission Altitude is the height of the drone relative to the area being
mapped, which is also how ground sample distance (GSD) is calculated.
When do I have to adjust the
Relative Height in Advanced Settings?
there is a large difference between the elevation of the takeoff location and
the elevation of the area being mapped, you can adjust the Relative Height in Advanced
Settings to ensure that the Mission Altitude is determined considering the
elevation of the area being mapped. Please see the attached illustration:
the drone takes off from a 50m building marked H1 in the illustration, the area
being mapped is marked A, and the expected altitude for aerial data collection
is 100m, you can set the Mission Altitude in Basic Settings to 100m, and
Relative Height in Advanced Settings to 50m. Similarly, if the drone takes off
from H2 to map area B, which is a hill with an elevation of 40m, and the
expected altitude for aerial data collection is 60m, then set Mission Altitude
to be 60m, and Relative Height to be -40m.
I do to ensure accuracy in my missions when collecting data with the Phantom 4
1) Conduct your missions in clear
weather conditions with high visibility.
2) Check the images and videos for
brightness and clarity immediately after your mission.
3) During a surveying mission, avoid
areas with strong electromagnetic interference or obstructions to ensure the
accuracy of the attitude algorithm of the Phantom 4 RTK. Also make sure that
the remote controller is properly linked to the aircraft.
4) Ensure there is enough forward and
side overlap. It is recommended to have a forward overlap rate of 80% and a
side overlap rate of 70%. Overlap rates can be adjusted depending on the
When should I adjust the overlap
rates based on the terrain?
It is recommended to have a forward overlap rate of 80% and
a side overlap rate of 70%, which should meet the requirements for most
application scenarios. The overlap rate can be increased when the area being
mapped has a large difference in elevation to ensure the highest point mapped
has enough overlap. When the area mapped is relatively uniform in elevation,
the overlap rate can be adjusted lower to reduce the amount of data that needs
to be processed, making the mapping mission more efficient. However, it is
recommended to keep the forward overlap at a minimum of 65% and side overlap at
a minimum of 60%.
When I connect DJI Terra to Phantom
4 RTK, the app tells me that I cannot take off because the RTK signal is too
weak. What should I do?
could be that you are operating somewhere with a lot of signal interference or
obstructions, which affects the strength of the RTK signal. Try turning off the
RTK module and take off manually with the GNSS positioning. Once the drone
reaches a height where there is less interference, you can turn on the RTK
module and connect to DJI Terra to conduct your flight missions.
Terra support the marking of Ground Control Points (GCPs)?
DJI Terra does not support GCPs, but a similar mapping accuracy can be achieved
by using DJI Terra with Phantom 4 RTK without marking GCPs.
Why is my computer stuck when
processing images locally to reconstruct a model? Can I run DJI Terra while
running other programs?
build reconstruction models as quickly as possible, DJI Terra uses all the
computer resources available, including the CPU, RAM, and VRAM of the graphics
card, which could make the computer slower while running DJI Terra but should
not be a problem once the processing is finished. It is recommended
that you don’t run other programs that might be GPU-intensive while running DJI
Terra, as doing so could result in failure of model reconstruction.
What are the Field, Urban, and Fruit
Tree Scenarios in
The Field Scenario is designed to
capture data from a relatively flat land, for example rice or wheat fields.
Urban Scenario is designed for areas with buildings of different heights.
Fruit Tree Scenario is designed for orchards that might have a large variation of
elevations and heights.
2D mapping algorithms are optimized for the three specific scenarios, so you
can choose the one that best fits your mission type.
What projection is used to obtain
the 2D mapping results in DJI Terra?
map tiles in DJI Terra use the Web Mercator projection. The digital orthophoto
map (result.tif) and digital surface model (dsm.tif) use the Universal
Transverse Mercator (UTM) projection, where the projected zone number is
calculated by taking the average of longitude coordinates collected.
Why is there a large discrepancy between the
elevation result in the digital surface model (DSM) of the 2D map generated by
DJI Terra and the actual elevation measured via RTK?
location information on aerial images collected by a drone that’s not equipped
with RTK is not the most accurate, which will result in a difference between
the elevation in the digital surface model (DSM) and the actual elevation.
conducting missions with the Phantom 4 RTK, if the 2D map is generated with
only the Nadir view images
collected, the precision of the DSM will be limited, which is why it is
recommended to incorporate oblique imagery in building the 2D map to enhance
precision. This can be done by setting the gimbal pitch to -45° and circling
the point of interest during flight.
What is the difference between 3D Reconstruction in Mapping Mission
and in Oblique Photography Mission?
is no difference. If only Nadir view images are available, it is recommended to
use a mapping mission for building 2D maps. If oblique photos are available,
you can choose an oblique photography mission.
How different are the 3D models
built at different resolutions? How long does it take to build models at these
There are three
options for reconstruction resolution: high, medium, and low, which will
generate models at full, half, and quarter resolution respectively. The higher
the resolution the better the quality of the reconstructed models. The rough ratio
of time consumption for reconstruction at high:medium:low resolutions is about
Why are there gaps in my model? What
are some factors that affect the quality of the reconstruction?
Gaps in the model can be due to
missing shots of the area being mapped, or images taken at poor angles. The
quality of reconstruction can be affected by factors such as reflective
surfaces in the area (water or glass), or large areas of the same color or
pattern (white walls, skies).
Can I trim or edit the 3D models
generated in DJI Terra?
Currently this function is not
supported. If you would like to edit the model, you can export it and edit in
What files can I get from the 2D
maps and 3D models built in DJI Terra?
In addition to the map tiles shown
in the app’s interface, DJI Terra’s 2D maps provide digital orthophoto maps and
digital surface models in the GeoTIFF format used with UTM projection.
DJI Terra’s 3D model reconstructions
contain texture mesh in .ply format and level of detail model in .osgb or .b3dm
do I view the results and files from my 2D maps and 3D models?
click the More button in each Mission and open the file folders where the files
generated from the missions are stored. You can also use Ctrl + Alt + F to quickly go to the
folder. 2D maps are stored under “map” and 3D models are stored under “models”.
To view log files, use Ctrl + Alt + L.
might affect the accuracy of the 2D and 3D reconstructions in DJI Terra?
The accuracy of the reconstruction
can be affected by factors such as camera distortion, image quality, flight
height, side and forward overlap settings, GPS (RTK) positioning accuracy and
the area’s texture information.
What is the accuracy when building
2D maps and 3D models with the Phantom 4 RTK?
using the Phantom 4 RTK, the absolute accuracy achieved by the 2D maps in DJI Terra is around
1 to 2 times the GSD, which is a similar level of accuracy as other data
processing software. When flying at 100m height, the absolute horizontal
accuracy of the 2D map is 2-5cm, and the absolute accuracy of the 3D models is
coordinate system and elevation are used for 2D and 3D reconstructions in DJI
system used depends on the location of data collection. When using the Phantom
4 RTK to collect data, you can choose the coordinate system of the RTK module on
the remote controller from the China Geodetic Coordinate System 2000
(CGCS2000), the World Geodetic System 1984 (WGS84, which is the default
system), or a custom coordinate system. If you use another drone, the images
collected have coordinates from the WGS84 system. The elevation of the data
collected with the CGCS2000 and WVS84 system is the ellipsoid height.
Can I run multiple missions on the
you cannot run multiple missions due to limitations in the computer’s
Can I modify the location where my
2D and 3D reconstructions are saved?
Yes. The default path is C:\Users\***(User Name)\Documents\DJI\DJI
Terra. You can modify the path by going to
Can I import models generated in DJI
Terra into other software programs, such as Maya, Blender, SketchUp, and 3ds
When you convert .ply files
generated in DJI Terra into .obj files, you can import them into Maya, Blender,
SketchUp, and 3ds Max. Look up tutorials for the specific process for each
Can I embed a 3D model into a
Yes, .b3dm, .osgb, and .ply files
generated by DJI Terra are universal file formats and can be embedded into
webpages. You can find instructions for embedding each of these formats online.
Can I use
non-aerial images to build 2D or 3D models?
Theoretically they can be used to
reconstruct 3D models although the quality might suffer. They cannot be used to
build 2D reconstructions.
Can I process images taken from
non-DJI drones in DJI Terra to build 2D and 3D reconstructions?
Theoretically yes for 3D
models, but the results might not be as good as if you were to use DJI drones.
The quality of the reconstructions will benefit from GPS or RTK positioning
data on the images. 2D reconstructions are not supported.