The saying goes that "the output is only as
good as the input." As in most data processing systems,
for DatuBIM to work correctly, users need to make sure that their input data is correct from the beginning and
practices. This isn't always the case, and in this article,
we share some tips on avoiding common mistakes and pitfalls.
Making sure you have a
- Images must have GPS
coordinates in their EXIF info. Images without GPS coordinates data cannot be
- Images resolution may not be higher than 40
- Images must be taken using a
photogrammetry aware flight application. We suggest you use DatuFly
Professional as it follows our best practices. Please read our Best Practices for Drone Photography article
for detailed information.
If you use an RTK drone, enter undulation
In case you are using an RTK drone, it
is crucial to mark this in
the flight details when
adding a new flight. It is also essential that you specify the
undulation delta height correction. These steps will ensure that you will get suitable ground control hints on the
images once images are linked. If you do not know what
value to use for the region you photographed, you should consult with your
local mapping authority.
global shutter cameras for higher precision
First of all, global shutter
cameras will give you higher precision than rolling shutter cameras.
automatically detects the use
of a rolling shutter camera. It will prompt
you to specify if the images were taken in motion, meaning while the drone was
or stationary, meaning
that the drone stopped on every shot.
you used a rolling
stationary mode, DatuBIM
will not make any corrections to compensate for the rolling
In case you took the images in
motion with a rolling
shutter camera, please make sure to mark
this in the Flight Info & Preferences, as shown in the below picture.
a good, stable
is a cloud-based platform,
so to use it properly, you must have a decent Internet connection with good
speed for both uploads and downloads.
first step in DatuBIM when adding a new flight is to upload the images.
As users tend to use high-resolution images, the size of these images
is growing bigger and bigger. For example, the size of a 20MP image is about
9MB, so if you have 1000 images per flight, we speak about 9GB of data that needs to be
a slow Internet
connection, this may take a full day to do.
all 3D models generated are gigabytes in size, so you should have a good download speed to view
bottom line: The
faster your Internet
connection, the more you will enjoy and benefit from using DatuBIM.
Correctly populate your Ground Control
You can import ground control points to
DatuBIM using CSV files.
control points (GCP's) have
coordinates; X, Y, and Z. Or, in other words, Easting, Northing, and
Height, as shown in the example
The column headings to be used in this file are
name, e, n, and h,
which correspond to GCP name, easting, northing, and height. The order
of the coordinate columns is deliberate, as long as the heading is correct, which means that the order can be (e, n, h), (n, e, h), or (h, n, e), etc.
A common mistake is to
switch easting with northing values, which puts the project somewhere else in the world. So, make sure to match your data with your columns.
Don't block popups in your Internet browser
needs to have popups enabled to work correctly, so make sure your popup blocker
is disabled. Please pay attention that this parameter is sometimes reset
automatically after updating your Internet browser. Please make sure it is set
correctly after any update.