Cameras

We have several different cameras that can be used either from air (drone) or from the ground. These are the available cameras:

Sony QX1. This camera is mounted in a gimbal and mounted to the lab’s 3DR Solo drone.
 

Thermal camera

The lab has a Flir Vue Pro 13mm thermal camera with 640×480 pixels resolution and 30 frames per second. The camera can be used to locate hot-spots when putting out a forest fire.

Here is an example of a flight in a prescribed fire in Ekträsk.

3DR Solo, equipped with Flir Vue and GoPro over prescribed fire.

Example of a synchronized video feed from a GoPro and the thermal camera:


Forest fire, fusion of thermal and RGB camera

 

GNSS receivers

The lab have two high resolution GNSS receivers. The newest is a Trimble GeoXR 6000 from 2014 and the second is a TopCon GRS-1 from 2010. Both uses RTK (Real Time Kinematic) and connects to Swepos using either Telia cellular network or through a WLAN connection with a Net1-modem. Both these devices can measure a point in a few seconds with centimeter resolution, but it needs clear vision to the satellites.

Here are user instructions for the devices:

  • Trimble GeoXR 6000
  • TopCon GRS-1 (e-mail us if you need a copy, will be published shortly)
Measurement of a ground control point for a drone flight with the Trimble GeoXR 6000.
 

Computers

In the lab we have in total 7 computers specially designed to work with heavy processing of 3D-data. One of the computers is connected to a 75 inch UHD-TV and is used for presentations and the HTC Vive (Virtual Reality).

The computers are numbered from their computer names:

  • 1: Core i7 6800K 3.4GHz (6-cores), 64 GB RAM, 1 x GeForce GTX 1080 Ti, 2 x 25″ TFT 2560×1440
  • 2: Core i7 6800K 3.4GHz (6-cores), 64 GB RAM, 1 x GeForce GTX 1080 Ti, 2 x 25″ TFT 2560×1440
  • 36: Core i7 6700K 4GHz (4-cores), 64 GB RAM, 1 x GeForce GTX 1080, 75″ UHD-screen
  • 98: Core i7 4930K 3.4GHz (6-cores), 64 GB RAM, 2 x GeForce GTX 780, 28″ UHD-screen
  • 99: Core i7 4820K 3.7GHz (4-cores), 64 GB RAM, 1 x GeForce GTX 780, 28″ UHD-screen
  • 100: Core i7 4820K 3.7GHz (4-cores), 32 GB RAM, 27” 3D-screen
  • 101: Core i7 4820K 3.7GHz (4-cores), 32 GB RAM, 27” 3D-screen

 

Teresterial laser scanner

The lab has a Trimble TX8 laser scanner (from 2014). The scanner is used to collect accurate measurements of the ground and the tree stems. Here is an example of one birch that is cut out from a multiscan (several scans are merged into one dataset):

A birch consisting of 12 million 3D-points. This tree was cut from a larger area scanned with a terresterial laser scanner (TLS).

The scanner is mounted on a tripod and collects 1 million points every second. In three minutes a full scan is done with a point spacing of about 4 mm on 10 meters distance.

Multiscan where a sphere is mounted on the previous and the next scan location for georeferencing.
Example from a forest plot in Remningstorp. The points are colored by altitude and intensity.