Christian Blum

Christian Blum
Humboldt-Universität zu Berlin | HU Berlin · Department of Computer Science

About

15
Publications
3,295
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161
Citations

Publications

Publications (15)
Article
Full-text available
In this paper, we explore the potential of mobile robots with simulation-based internal models for safety in highly dynamic environments. We propose a robot with a simulation of itself, other dynamic actors and its environment, inside itself. Operating in real time, this simulation-based internal model is able to look ahead and predict the conseque...
Conference Paper
This paper introduces a method for making fast decisions in a highly dynamic situation, based on forward simulation. This approach is inspired by the decision problem within the RoboCup domain. In this environment, selecting the right action is often a challenging task. The outcome of a particular action may depend on a wide variety of environmenta...
Article
Full-text available
Jumping spiders are capable of estimating the distance to their prey relying only on the information from one of their main eyes. Recently, it has been shown that jumping spiders perform this estimation based on image defocus cues. In order to gain insight into the mechanisms involved in this blur-to-distance mapping as performed by the spider and...
Article
Full-text available
Traditional algorithms for robots who need to integrate into a wireless network often focus on one specific task. In this work we want to develop simple, adaptive and reusable algorithms for real world applications for this scenario. Starting with the most basic task for mobile wireless network nodes, finding the position of another node, we introd...
Article
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Finding the physical location of a specific network node is a prototypical task for navigation inside a wireless network. In this paper, we consider in depth the implications of wireless communication as a measurement input of gradient-based taxis algorithms. We discuss how gradients can be measured and determine the errors of this estimation. We t...
Conference Paper
Full-text available
If robots are to be trusted, especially when interacting with humans, then they will need to be more than just safe. This paper explores the potential of robots capable of modelling and therefore predicting the consequences of both their own actions, and the actions of other dynamic actors in their environment. We show that with the addition of an...
Conference Paper
Full-text available
In this paper we show a new perspective on human-robot interaction by presenting a system for intuitive interaction with flying robots. This goes beyond the usual remote control of these robots, by having an interactive space where people can physically interact with flying robots in an intuitive and safe way. The presented system has various ways...
Article
Full-text available
Integration of robots into wireless networks is important for a number of scenarios. One of the tasks is network exploration for which the most basic case is finding the physical outline of the network. We propose a robust algorithm for exploring the outline of a network with a mobile robot. For this algorithm we study robustness against noise for...
Article
Integration of robots into wireless networks is important for a number of scenarios. One of the tasks is network exploration for which the most basic case is finding the physical outline of the network. We propose a robust algorithm for exploring the outline of a network with a mobile robot. For this algorithm we study robustness against noise for...
Conference Paper
In this paper we present our approach to network robotics using a flying robot. The robot is an autonomous multicopter equipped with a computational module and a wireless mesh node. We also present the wireless environment in which algorithms are developed and evaluated. We argue that sensorimotor interaction, i.e. shaping the sensory inputs by spe...
Article
Full-text available
Photonic crystals represent a novel platform for the realization of integrated photonic circuits with numerous applications. This article reviews the present status of a computational approach dedicated to these systems that is based on photonic Wannier functions. The workings of the Wannier function approach are illustrated by way of selected exam...
Article
Full-text available
We present a Wannier-function-based time-domain method for photonic-crystal integrated optical circuits. In contrast to other approaches, this method allows one to trade CPU time against memory consumption and therefore is particularly well suited for the treatment of large-scale systems. As an illustration, we apply the method to the design of a p...

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Projects

Project (1)
Project
This is my PhD project which is still due to close soon but has become Sep. 2017. I am looking at computational models that enable robots to explore their sensorimotor space (the entire basis of what robot can know), use the generated data to learn bidirectional models of their own dynamics, and exploit the acquired models to move towards sensorimotor goal states. In other words, robot can bootstrap primitive motor skills without being told about concrete body, world, physics and other things.