About

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Male


Location

Reno, NV


Please tell us a bit about your UAV interest

Aerial Robotics Autonomy


Hometown:

Reno


Activity Feed

Kostas Alexis commented on Kostas Alexis's blog post DARPA Subterranean Challenge - Team CERBERUS
"thank you! "
Oct 2, 2018
Kostas Alexis posted a blog post
Dear community,We would like to inform you about our participation in the DARPA Subterranean Challenge as Team CERBERUS (University of Nevada, Reno, ETH Zurich, Sierra Nevada Corporation, University of California, Berkeley, Flyability). Please find…
Oct 1, 2018
Kostas Alexis posted a blog post
Dear community,We would like to share the following result on aerial robotic navigation through obscurants. The test took place in a smoke-filled machine-shop environment.Best,Kostas
Feb 24, 2018
Kostas Alexis posted a blog post
This is to share results on radiation source localization in GPS-denied environments using autonomous aerial robots that estimate the nuclear (Cs-137 in the experiments) source location and intensity, while simultaneously planning for informative…
Jan 12, 2018
Kostas Alexis commented on Kostas Alexis's blog post Autonomous Exploration inside Dark Tunnels
"Dear Ed. Although we are currently not working on a commercial product, I can tell you that all the components here are low-cost. They are cameras, LEDs, IMUs, embedded electronics (custom-built) and the only thing that increases the price is the…"
Nov 6, 2017
Kostas Alexis commented on Kostas Alexis's blog post Autonomous Exploration inside Dark Tunnels
"One of our main application scenarios relates to nuclear site decommissioning support. Others also are considered. "
Oct 29, 2017
Kostas Alexis commented on Kostas Alexis's blog post Autonomous Exploration inside Dark Tunnels
"Hi Andrea,

Thanks for your interest. Most of the work is either published ( http://www.autonomousrobotslab.com/publications.html ) or under review etc. Still however, this talk covers a significant part of the…"
Oct 27, 2017
Kostas Alexis posted a blog post
Dear community,In these two videos you will see some recent results on autonomous exploration of tunnels in visually-degraded (dark) conditions. Both localization and mapping, as well as path planning and control are handled completely…
Oct 26, 2017
Kostas Alexis commented on Kostas Alexis's blog post Open-source: Localization Uncertainty-aware Exploration and Mapping Planner
"Some details:
* perception system: stereo visual - synchronized with IMU / software synchronization with IMU works just fine (in fact the video in darkness is like that)
* processing power (all processing takes place onboard): Intel NUC i7
*…"
Jun 3, 2017
Kostas Alexis posted a blog post
Dear community members,During this ICRA we presented our work on "Uncertainty-aware Receding Horizon Exploration and Mapping using Aerial Robots".This work is now accompanied with an open sourced ROS toolbox available at:…
Jun 2, 2017
Kostas Alexis posted a blog post
Dear community members,This is very preliminary work on aerial robotic radiation detection in real-time and in a GPS-denied manner. The robot localizes based on visual-inertial data and integrates a deferentially installed 2-radiation detectors…
Apr 25, 2017
Kostas Alexis commented on Kostas Alexis's blog post Autonomous Exploration and Mapping in Darkness
"Hi Cameron, thanks for your interest. There is no use of UWB or other external localization system. The system performs localization solely based on the camera images and the IMU. The ToF sensor supports the mapping task. You are very correct…"
Mar 8, 2017
Kostas Alexis posted a blog post
We would like to share two of our recent and ongoing results related to autonomous exploration and mapping in darkness. As opposed to approaches that rely on localization based on LiDAR systems, the videos below rely on visual-inertial localization…
Mar 7, 2017
Kostas Alexis commented on Kostas Alexis's blog post Autonomous Exploration and Inspection Using Flying Robots
"@Andreas, 
There is a very large body of work on the problem. Few comments on all of those what you say:

About the VI-Sensor: what you read at Skybotix website is true. So it is not a commercial system that a third-party can buy now. But be sure…"
Jan 29, 2016
Kostas Alexis commented on Kostas Alexis's blog post Autonomous Exploration and Inspection Using Flying Robots
"@Rob

It is not quite as you say. Yuneec is using direct depth data from the Realsense. Here it is very different with having to do all the calculations based on a camera-IMU system. However, a camera is not limited to a very small distance as…"
Jan 29, 2016
Kostas Alexis commented on Kostas Alexis's blog post Autonomous Exploration and Inspection Using Flying Robots
"@Andreas: Have  a look here: http://www.intel.com/content/www/us/en/nuc/overview.html . The latest I have is with i7. The camera system is this one: http://wiki.ros.org/vi_sensor . It has been developed at the Autonomous Systems Lab at ETH Zurich…"
Jan 29, 2016
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