Kostas Alexis's Blog (12)

DARPA Subterranean Challenge - Team CERBERUS

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 out more…

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Added by Kostas Alexis on October 1, 2018 at 7:00pm — 2 Comments

Thermal-Inertial Localization for Autonomous Navigation of Aerial Robots through Obscurants

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

Added by Kostas Alexis on February 25, 2018 at 12:00am — 1 Comment

Radiation Source Localization in GPS-denied Environments using Aerial Robots

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 measurements. Smart selection of measurement points is critical as the robot has to dwell for…

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Added by Kostas Alexis on January 12, 2018 at 12:00pm — No Comments

Autonomous Exploration inside Dark Tunnels

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 autonomously. …

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Added by Kostas Alexis on October 26, 2017 at 7:30pm — 8 Comments

Open-source: Localization Uncertainty-aware Exploration and Mapping Planner

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:…

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Added by Kostas Alexis on June 2, 2017 at 1:30am — 4 Comments

Robotized Radiation Mapping

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 solution to exploit their polarity characteristics. Most of the research is ahead but we…

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Added by Kostas Alexis on April 25, 2017 at 6:26pm — No Comments

Autonomous Exploration and Mapping in Darkness

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 with LEDs illuminating the scene appropriately. For the first case, visible-spectrum cameras are…

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Added by Kostas Alexis on March 7, 2017 at 2:00pm — 3 Comments

Autonomous Exploration and Inspection Using Flying Robots

Hi all, 

We recently released this video on autonomous exploration and inspection. Have a look!

Summary: 

The robot employs its visual-inertial navigation system in order to localize itself in the environment and simultaneously map it and 3D reconstruct it. Based on the newly proposed "Receding Horizon Next-Best-View…

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Added by Kostas Alexis on January 28, 2016 at 10:53pm — 11 Comments

"Autonomous Christmas Lab": a robotic "Merry Christmas!"

Dear members of the drones community,

For one more year... the time has come! 

The Autonomous Systems Lab at ETH Zurich just released the "Autonomous Christmas Lab 2014" video! Watch and share! Robots are indeed excellent Christmas…

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Added by Kostas Alexis on December 16, 2014 at 7:00am — 4 Comments

Wireless sensor network control Drones?

Hello to community!



It is a great fact that UAVs tend to miniaturization. Despite the high technology advances on microprocessors and embedded systems it is clear that only simple control laws can be implemented into Miniature Autonomous Vehicles. Note that i am not talking for rf manned control but for fully autonomous solutions. So what about Wireless Sensor Network control for Drones? It is an idea implemented widely in ground robots. The main approach is to implement on-board only… Continue

Added by Kostas Alexis on May 11, 2010 at 2:43am — 7 Comments

New Advanced Servo Controller

Hello to all community members.



I have just received to my e-mail this new and very improved servo controller:



You can find product details at: http://www.01mech.com/supermodified



I copy the following from the site: …

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Added by Kostas Alexis on April 12, 2010 at 6:30am — 4 Comments

Interfacing MATLAB and Arduino

Hi friends!



I have just found and tested a Blockset that interfaces MATLAB/SIMULINK and Arduino. You may find this at:



http://www.mathworks.com/matlabcentral/fileexchange/24675-arduino-target



I highly suggest this program since it offers rapid prototyping capabilities to the famous and cheap arduino. The guys have build a block that interfaces with the Real Time Workshop of… Continue

Added by Kostas Alexis on December 1, 2009 at 7:56am — 9 Comments

Groups

Season Two of the Trust Time Trial (T3) Contest 
A list of all T3 contests is here. The current round, the Vertical Horizontal one, is here

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