On Sunday there is always a workshop of all teams after the contest. They share
their findings what worked and what did not, what is in reality inside of their
smart robots, how they liked the new rules etc. This year we were recording so
although it is not the top quality you can see and hear what was presented.
Radoslav Kovac from team Istrobotics, 3rd place in Robotour 2017 and winner
from last year, speaks about their modified monster truck robot (original top
speed 48km per hour), team history, 3D printed parts, new LED indicators, …
You will also learn what were the root causes of some failures we have seen
during the competition.
Pavel Jiroutek from Short Circuits Prague team speaks about their family team,
comeback to Robotour, robot hardware (modified RC car), … Pavel presents his
development cycle with simulator, replaying log files and access to robot
webserver providing detailed info even during the real run. There is a small
discussion about usability of ROS and experiences of various teams at the end
of his presentation.
Majer, Halodova, Krajnik: A precise teach and repeat visual navigation system
based on the convergence theorem
We present a simple teach-and-repeat visual navigation method robust to
appearance changes induced by varying illumination and naturally-occurring
The method is computationally efficient, it does not require camera calibration
and it can learn and autonomously traverse arbitrarily-shaped paths.
During the teaching phase, where the robot is driven by a human operator, the
robot stores its velocities and image features visible from its on-board
During autonomous navigation, the method does not perform explicit robot
localisation in the 2d/3d space but it simply replays the velocities that it
learned during a teaching phase, while correcting its heading relatively to the
path based on its camera data.
The experiments performed indicate that the proposed navigation system corrects
position errors of the robot as it moves along the path.
Therefore, the robot can repeatedly drive along the desired path, which was
previously taught by the human operator.
The presented system, which is based on a method that won the Robotour
challenge in 2009 and 2008, is provided as open source at
The research is supported by the Czech Science Foundation projects 17-27006Y
If you would like to somehow support this contest or you have some
comment/query, please use our contact form.