Part of
ISSN 1613-4214
In dieser Arbeit wird eine Systemarchitektur zur sicheren und robusten Verhaltensentscheidung für automatisierte Fahrzeuge vorgeschlagen. Diese setzt grundlegende Verhaltensoptionen in einem hierarchischen Arbitrationsgraphen zusammen und sichert dabei die Stellgrößen mittels Verifikation und diversen Rückfallebenen ab. Die vorgestellte Methode führt zu einer transparenten und nachvollziehbaren Entscheidungsfindung und erzeugt auch bei hohen Ausfallraten ein sicheres und stabiles Fahrverhalten.
This work proposes a system architecture for secure and robust behavioral decision-making for automated vehicles. It assembles basic behavior blocks in a hierarchical arbitration graph and ensures safety through verification and diverse levels of fallback. The presented method contributes to a transparent and comprehensible decision-making process and produces safe and stable driving behavior even at high failure rates.
Umfang: IX, 167 S.
Preis: 43.00 €
Buchdetails
This work develops a motion planner that compensates the deficiencies from perception modules by exploiting the reaction capabilities of a vehicle. The work analyzes present uncertainties and defines driving objectives together with constraints that ensure safety. The resulting problem is solved in real-time, in two distinct ways: first, with nonlinear optimization, and secondly, by framing it as a partially observable Markov decision process and approximating the solution with sampling.
Umfang: XIII, 191 S.
Preis: 43.00 €
Buchdetails
This work presents a behavior planning algorithm for automated driving in urban environments with an uncertain and dynamic nature. The algorithm allows to consider the prediction uncertainty (e.g. different intentions), perception uncertainty (e.g. occlusions) as well as the uncertain interactive behavior of the other agents explicitly. Simulating the most likely future scenarios allows to find an optimal policy online that enables non-conservative planning under uncertainty.
Umfang: XIV, 146 S.
Preis: 41.00 €
Buchdetails
Ferromagnetische Inhomogenitäten entlang der Gleisstrecke dienen als Landmarken, mit denen jeder Streckenabschnitt im Streckennetz eindeutig identifizierbar ist. Dadurch wird neben der berührungslosen Geschwindigkeitsbestimmung auch ein gleisselektives Verfahren bereitgestellt, um die absolute Position des Schienenfahrzeugs zu bestimmen.
Ferromagnetic inhomogeneities along the track serve as landmarks. With these, each track section in the track network can be uniquely identified. In addition to non-contact speed determination, this also provides a track-selective method for determining the absolute position of the rail vehicle.
Umfang: XIV, 119 S.
Preis: 40.00 €
Buchdetails
Hochautomatisierte Fahrzeuge benötigen eine präzise Eigenlokalisierung, um sich zuverlässig, sicher und effizient im innerstädtischen Straßenverkehr zu bewegen. Diese Arbeit präsentiert eine vollumfängliche Methode zur Erstellung und Aktualisierung von hochgenauen 3D-Lokalisierungskarten und eine Methode zur präzisen und robusten Lokalisierung mit Multi-Kamera-Systemen.
Automated vehicles heavily rely on accurate self-localization to operate safely and efficiently in dynamic road traffic scenarios. In this work, an iterative and robust approach to create highly accurate maps comprising any number of drives of arbitrary length with constant computation complexity is proposed. Furthermore, a high-precision self-localization method using multiple cameras covering the surrounding environment is presented.
Umfang: XI, 151 S.
Preis: 42.00 €
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In motion planning for automated vehicles, a thorough uncertainty consideration is crucial to facilitate safe and convenient driving behavior. This work presents three motion planning approaches which are targeted towards the predominant uncertainties in different scenarios, along with an extended safety verification framework. The approaches consider uncertainties from imperfect perception, occlusions and limited sensor range, and also those in the behavior of other traffic participants.
Umfang: XIII,161 S.
Preis: 41.00 €
Buchdetails
In dieser Arbeit werden die Grenzen aktueller Odometrieschätzung mithilfe monokularer Kamerasysteme identifiziert und erweitert. Die Basis bildet der Bündelblockausgleich, für welchen Punkte in zeitlichem Bildsequenzen verfolgt werden. Hieraus wird sowohl die Kamerabewegung geschätzt als auch die Umgebungsstruktur rekonstruiert. Mithilfe eines LIDAR wird die Tiefeninformation zu den Kameradaten extrahiert und in das Optimierungsproblem integriert.
In this work, the limits of current algorithms for odometry estimation for monocular vision systems are identified and extended. The method is based on bundle adjustment with which tracked feature points in a temporal image sequence are reconstructed and the motion of the camera is estimated. Using an aditional LIDAR sensor, depth information that corresponds to the visual feature points is extracted and integrated in the underlying optimization problem.
Umfang: XI, 143 S.
Preis: €42.00 | £39.00 | $74.00
Buchdetails
Die vorliegende Arbeit stellt ein Konzept zur zeitlichen Vorhersage von Fahrstreifenwechselmanövern auf Autobahnen für Systeme zur automatischen Fahrzeugführung vor. Derartige Systeme benötigen ein Verständnis der Fahrumgebung zur konfliktfreien und nachvollziehbaren Durchführung der Fahraufgabe. Dies beinhaltet die Wahrnehmung und Interpretation der Fahrumgebung zur Erkennung und Vorhersage von Fahrmanövern des umgebenden Verkehrs.
A concept for time-related forecasts of lane change maneuvers in highway scenarios is presented within the present work. Automated driving systems rely on understanding the driving environment to fulfill their driving task transparently and safely. This involves the perception of the driving environment as well as its interpretation to detect and predict driving maneuvers of road users.
Umfang: XI, 232 S.
Preis: €46.00 | £42.00 | $81.00
Buchdetails
This work proposes novel approaches for object tracking in challenging scenarios like severe occlusion, deteriorated vision and long range multi-object reidentification. All these solutions are only based on image sequence captured by a monocular camera and do not require additional sensors. Experiments on standard benchmarks demonstrate an improved state-of-the-art performance of these approaches. Since all the presented approaches are smartly designed, they can run at a real-time speed.
Umfang: XII, 146 S.
Preis: €40.00 | £37.00 | $70.00
Buchdetails
This works describes an approach to lane-precise localization on current digital maps. A particle filter fuses data from production vehicle sensors, such as GPS, radar, and camera. Performance evaluations on more than 200 km of data show that the proposed algorithm can reliably determine the current lane. Furthermore, a possible architecture for an intuitive route guidance system based on Augmented Reality is proposed together with a lane-change recommendation for unclear situations.
Umfang: XII, 165 S.
Preis: €43.00 | £40.00 | $76.00
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