33 citations · 76 across the 8 of their papers we have counts for
9 papers
Self-Supervised Depth Correction of Lidar Measurements from Map Consistency Loss
Ruslan Agishev, Tomáš Pětříček, Karel Zimmermann
Depth perception is considered an invaluable source of information in the context of 3D mapping and various robotics applications. However, point cloud maps acquired using consumer…
Similarity among the 2D-shapes and the analysis of dissimilarity scores
Karel Zimmermann
We present a conceptually simple and intuitive method to calculate and to measure the dissimilarities among 2D shapes. Several methods to interpret and to visualize the resulting d…
Teachers in concordance for pseudo-labeling of 3D sequential data
Awet Haileslassie Gebrehiwot, Patrik Vacek, David Hurych +3
Automatic pseudo-labeling is a powerful tool to tap into large amounts of sequential unlabeled data. It is specially appealing in safety-critical applications of autonomous driving…
System for multi-robotic exploration of underground environments CTU-CRAS-NORLAB in the DARPA Subterranean Challenge
Tomáš Rouček, Martin Pecka, Petr Čížek +19
We present a field report of CTU-CRAS-NORLAB team from the Subterranean Challenge (SubT) organised by the Defense Advanced Research Projects Agency (DARPA). The contest seeks to ad…
Data-driven Policy Transfer with Imprecise Perception Simulation
Martin Pecka, Karel Zimmermann, Matěj Petrlík +1
The paper presents a complete pipeline for learning continuous motion control policies for a mobile robot when only a non-differentiable physics simulator of robot-terrain interact…
Learning for Active 3D Mapping
Karel Zimmermann, Tomas Petricek, Vojtech Salansky +1
We propose an active 3D mapping method for depth sensors, which allow individual control of depth-measuring rays, such as the newly emerging solid-state lidars. The method simultan…
Fast Simulation of Vehicles with Non-deformable Tracks
Martin Pecka, Karel Zimmermann, Tomáš Svoboda
This paper presents a novel technique that allows for both computationally fast and sufficiently plausible simulation of vehicles with non-deformable tracks. The method is based on…
Controlling Robot Morphology from Incomplete Measurements
Martin Pecka, Karel Zimmermann, Michal Reinštein +1
Mobile robots with complex morphology are essential for traversing rough terrains in Urban Search & Rescue missions (USAR). Since teleoperation of the complex morphology causes hig…
Direct solutions to tropical optimization problems with nonlinear objective functions and boundary constraints
Nikolai Krivulin, Karel Zimmermann
We examine two multidimensional optimization problems that are formulated in terms of tropical mathematics. The problems are to minimize nonlinear objective functions, which are de…