How to Tag GCPs

How to Tag GCP's

Welcome to this interactive tutorial on how to tag your GCPs. You think it

clicking the blue "Start Full Tutorial" button or you can jump to specific

on any of the other buttons you see on your screen. To navigate through this

tutorial, you can press the hotspots, the blue circles that you see throughout

And then if you need to navigate either forward or backwards, you can hover

over the bottom of the screen and navigate independently. Thanks.

Learn the step by step process needed to tag your GCPs for High Accuracy Maps. 

You've got a couple of options for tagging your GCPs in Drone Deploy.

Whether you're the one who uploaded the data or someone else on the team,

you can quickly tag your GCPs with a few simple steps.

If you're the one who uploaded the project, you should receive an email with a

Simply click on the blue box in the email to open the tagging tool.

If you don't receive the email or if you're not the one who uploaded the

you can access the tagging tool through the upload tab in Drone Deploy.

From the Explore tab, simply click on Upload tab

and then when the map is ready for tagging, the status will change from

Click on that tagged GCP button to open the same tagging tool as the email link

Workfow Example - DroneDeploy

Ground Control Points

If for whatever reason you need to edit your originally uploaded GCP data,

you can do that now by pressing on "Edit GCP Data" at the top of the screen.

This is not a recommended workflow. We generally recommend that all of your

is correct from the beginning for our AI to help with the tagging process.

Any edits to that screen will change AI and you will need to manually tag all

If you're happy with where all of your GCPs show up on the screen,

you can simply skip this section of the tutorial by clicking the arrow in the

and you would just begin by manually refining all of your GCPs on the next

User: nick.boone+1@dronedeploy.com
EPSG: GDA2020 / MGA zone 56
CSV:
Warning: updating the CSV will reset all tags for all GCPs.
Autofix
Save
Everything looks good, click Return to continue.

Now we're going to begin manually refining all of our GCPs. We'll do this by

clicking into each GCP making sure that everything is tagged in the exact

center of those GCPs and just manually refine what the AI initially put in.

It's recommended that you do this for all GCPs even though we're only going to

GCP 1: 12
GCP 2: 6
GCP 3: 9
GCP 4: 5
GCP checkpoint-5: 0
GCP 6: 11
GCP 7: 10
GCP 8: 15

For each image of your ground control point,

zoom in to where you can clearly see the defining features of that ground

and then click on the exact center or the exact point of that GCP.

You'll do this for each image and it's recommended you try to tag

at least eight images for each ground control point.

After refining all points on GCP number one, we would not move on to do the

For the sake of brevity, we're not going to go through tagging each and every

Just know that the process would be the same.

You would now click into the next ground control point, manually tag your eight

submit, and then move on to the next one.

An important note is sometimes it's best to skip GCPs.

If you can't accurately tag a GCP, if it's been moved, covered, relocated,

if you're just not certain what it is, it's always better to skip a GCP than

Once all your points have been manually refined or skipped, we're finally on

On this page we can see everything at a glance to see if there's anything that

For instance, some of these images that don't have eight tags, it'd be highly

recommended that you go back to that GCP and tag eight images,

if those images are available, in this particular case they weren't.

So we might want to change our map in the future to get more images of those G

Lastly, it's generally recommended that you have at least one checkpoint when

you're running ground control point and high accuracy workflows.

The ground control points are used in processing to tie your map to real

The checkpoints are used after processing to validate the accuracy of your map.

Checkpoints are the only way to actually validate if your map is accurate or

not, so it's highly recommended that one is a checkpoint.

Depending on your particular use case, that may or may not be possible.

But you can switch between ground control points and checkpoints by clicking on

the GCP or CHK tag above each individual GCP.

And that's it. Congratulations. You've tacked your math. If for whatever reason

, you need to navigate to other parts of this tutorial again.

Simply hover your mouse button over the bottom of the page and a navigation bar