Search Results for author: Hanno Ackermann

Found 17 papers, 6 papers with code

Deconfounded Imitation Learning

no code implementations4 Nov 2022 Risto Vuorio, Johann Brehmer, Hanno Ackermann, Daniel Dijkman, Taco Cohen, Pim de Haan

Standard imitation learning can fail when the expert demonstrators have different sensory inputs than the imitating agent.

Imitation Learning

Modality-Agnostic Topology Aware Localization

no code implementations NeurIPS 2021 Farhad Ghazvinian Zanjani, Ilia Karmanov, Hanno Ackermann, Daniel Dijkman, Simone Merlin, Max Welling, Fatih Porikli

This work presents a data-driven approach for the indoor localization of an observer on a 2D topological map of the environment.

Indoor Localization

Spatial-Temporal Transformer for Dynamic Scene Graph Generation

1 code implementation ICCV 2021 Yuren Cong, Wentong Liao, Hanno Ackermann, Bodo Rosenhahn, Michael Ying Yang

Compared to the task of scene graph generation from images, it is more challenging because of the dynamic relationships between objects and the temporal dependencies between frames allowing for a richer semantic interpretation.

Scene Graph Generation Video Understanding +1

NODIS: Neural Ordinary Differential Scene Understanding

1 code implementation ECCV 2020 Cong Yuren, Hanno Ackermann, Wentong Liao, Michael Ying Yang, Bodo Rosenhahn

Detected objects, their labels and the discovered relations can be used to construct a scene graph which provides an abstract semantic interpretation of an image.

Graph Generation Relationship Detection +2

Temporally Consistent Horizon Lines

1 code implementation23 Jul 2019 Florian Kluger, Hanno Ackermann, Michael Ying Yang, Bodo Rosenhahn

The horizon line is an important geometric feature for many image processing and scene understanding tasks in computer vision.

3D Reconstruction Autonomous Vehicles +2

Non-Rigid Structure-From-Motion by Rank-One Basis Shapes

no code implementations30 Apr 2019 Sami S. Brandt, Hanno Ackermann

The right singular vectors are affinely back-projected into the 3D space, and the affine back-projections will also be solved as part of the factorisation.

Uncalibrated Non-Rigid Factorisation by Independent Subspace Analysis

no code implementations22 Nov 2018 Sami Sebastian Brandt, Hanno Ackermann, Stella Grasshof

The word general refers to an approach that recovers the non-rigid affine structure and motion from 2D point correspondences by assuming that (1) the non-rigid shapes are generated by a linear combination of rigid 3D basis shapes, (2) that the non-rigid shapes are affine in nature, i. e., they can be modelled as deviations from the mean, rigid shape, (3) and that the basis shapes are statistically independent.

Object Recognition from very few Training Examples for Enhancing Bicycle Maps

no code implementations18 Sep 2017 Christoph Reinders, Hanno Ackermann, Michael Ying Yang, Bodo Rosenhahn

These algorithms are usually trained on large datasets consisting of thousands or millions of labeled training examples.

Object Recognition Transfer Learning

A Kinematic Chain Space for Monocular Motion Capture

no code implementations1 Feb 2017 Bastian Wandt, Hanno Ackermann, Bodo Rosenhahn

This paper deals with motion capture of kinematic chains (e. g. human skeletons) from monocular image sequences taken by uncalibrated cameras.

Industrial Robots

Motion Segmentation via Global and Local Sparse Subspace Optimization

no code implementations24 Jan 2017 Michael Ying Yang, Hanno Ackermann, Weiyao Lin, Sitong Feng, Bodo Rosenhahn

In this paper, we propose a new framework for segmenting feature-based moving objects under affine subspace model.

Clustering Motion Segmentation +1

Clustering with Hypergraphs: The Case for Large Hyperedges

no code implementations IEEE Transactions on Pattern Analysis and Machine Intelligence 2016 Pulak Purkait, Tat-Jun Chin, Hanno Ackermann, David Suter

The extension of conventional clustering to hypergraph clustering, which involves higher order similarities instead of pairwise similarities, is increasingly gaining attention in computer vision.

Clustering Face Clustering +1

On Support Relations and Semantic Scene Graphs

no code implementations19 Sep 2016 Michael Ying Yang, Wentong Liao, Hanno Ackermann, Bodo Rosenhahn

In contrast to previous methods for extracting support relations, the proposed approach generates more accurate results, and does not require a pixel-wise semantic labeling of the scene.

Scene Understanding

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