Arboreal Tree Height
Have you ever wondered how high a tree is? Do you miss the right equipment and don't want to carry around extra tools? Just pick up your phone and download our app.
It is the world's first AR-application that lets you measure the height of a tree.
- Great accuracy
- Easy to use
- The best tool is the one that's always with you
Test five times for free!
Features
iOS
- Measure the height of the tree
- Measure the height of the crown
- Measure the crown width
- Measure the inclination of the tree
- Measure the diameter – requires Lidar
- Save name and comment
- Save GPS-coordinates of the tree
- Zoom – easier to mark the base and the height of the tree
- Erase measurement
- Change name and comment of the tree
- Change haircross
- Save image of the tree
- Saved measurements are available in a list
- Lidar-support (mark the tree from further distance)
- Measure in imperial or metric system
- Export images and measurements as a .csv-file
Android
- Measure the height of the tree
- Measure the height of the crown
- Measure the crown width
- Measure the inclination of the tree
- Save name and comment
- Save GPS-coordinates of the tree
- Zoom – easier to mark the base and the height of the tree
- Erase measurement
- Change name and comment of the tree
- Change haircross
- Save image of the tree
- Saved measurements are available in a list
- Measure in imperial or metric system
- Export measurements as a .csv-file
How does it work?
Go near the tree and use the button to mark the tree
Move a few meters away from the tree and mark the base and the top of the tree.
The height of the tree is displayed on the screen.
What our users say about the app:
It is convenient and simple to use. The accuracy is good compared with laser height meters
Peder Israelson
Forester, Sveaskog
Neat and simple to use. Now I always have a height meter with me when I am outdoors
Malin Norderman
Forest Nature Conservation Specialist, Sveaskog
I think the app works very well, I have tested it against the Haglöfs Vertex altimeter and it gives a similar result
Jonas Jonzen
Forestry Researcher Engineer, SLU, Swedish University of Agricultural Sciences
Frequently Asked Questions
When you walk away from the tree you should keep your phone in an upright position (not pointing directly at the ground). Walk away approximately the same distance as the height of the tree. It is important that you see the top clearly from the point where you aim at the base and top of the tree. Some users tilt the screen when they press the button, try to avoid this by holding the phone with one hand and press the button with a finger from the other hand.
If you are measuring in a dense forest it could be hard to get a good view at the base of the tree. If you in the beginning marked the tree at breast height you could aim 1.3 meter below the red mark. You could also mark the base from one position and the top from another position.
Arboreal uses the camera and the internal sensors of the phone. New phones have better cameras and works better in low-light conditions. On iOS we have seen improvements when using iPhone 12 and newer compared with older models. On Android we have tested only on about 15 different models and got good results. But some users have reported problems on some other models, but we have not been able to reproduce them and see that this is a general problem. We recommend using Samsung and Google Pixel phones.
iOS: The device needs to support Augmented Reality (AR). All iPad and iPhone devices released after 2015 support AR. Android: The app uses AR technology that's available in most new phones. See the complete list of supported devices here: https://developers.google.com/ar/devices#google_play
The app creates a 3D environment with the camera and the internal sensors. The user marks the position of a tree and walks some distance from the tree and the inclinometer (angle) is uses to compute the height of the actual tree.
When the sun has set and its really dark, when you are measuring a tree in a place with no structures (for example a single tree on a snowfield) and when it is really cold and rainy outside because it is not pleasant to touch the screen with your fingers under this circumstances. As a summary it works very good during the conditions when it is usual to do measurements.
It is very accurate, the results are within a few percent depending on device. On iOS it is comparable with the result from professional instruments like Haglöf Vertex II. The accuracy it is good on most Android devices and versions.