Search Results for author: Mathias Gehrig

Found 22 papers, 18 papers with code

State Space Models for Event Cameras

1 code implementation23 Feb 2024 Nikola Zubić, Mathias Gehrig, Davide Scaramuzza

We address this challenge by introducing state-space models (SSMs) with learnable timescale parameters to event-based vision.

Event-based vision

Revisiting Token Pruning for Object Detection and Instance Segmentation

1 code implementation12 Jun 2023 Yifei Liu, Mathias Gehrig, Nico Messikommer, Marco Cannici, Davide Scaramuzza

In relation to the dense counterpart that utilizes all tokens, our method realizes an increase in inference speed, achieving up to 34% faster performance for the entire network and 46% for the backbone.

Image Classification Instance Segmentation +4

From Chaos Comes Order: Ordering Event Representations for Object Recognition and Detection

1 code implementation ICCV 2023 Nikola Zubić, Daniel Gehrig, Mathias Gehrig, Davide Scaramuzza

However, selecting the appropriate representation for the task traditionally requires training a neural network for each representation and selecting the best one based on the validation score, which is very time-consuming.

Event-based vision object-detection +3

A Hybrid ANN-SNN Architecture for Low-Power and Low-Latency Visual Perception

1 code implementation24 Mar 2023 Asude Aydin, Mathias Gehrig, Daniel Gehrig, Davide Scaramuzza

Our hybrid ANN-SNN model thus combines the best of both worlds: It does not suffer from long state transients and state decay thanks to the ANN, and can generate predictions with high temporal resolution, low latency, and low power thanks to the SNN.

3D Human Pose Estimation

Recurrent Vision Transformers for Object Detection with Event Cameras

1 code implementation CVPR 2023 Mathias Gehrig, Davide Scaramuzza

By revisiting the high-level design of recurrent vision backbones, we reduce inference time by a factor of 6 while retaining similar performance.

Event-based vision object-detection +1

Data-driven Feature Tracking for Event Cameras

1 code implementation CVPR 2023 Nico Messikommer, Carter Fang, Mathias Gehrig, Davide Scaramuzza

Because of their high temporal resolution, increased resilience to motion blur, and very sparse output, event cameras have been shown to be ideal for low-latency and low-bandwidth feature tracking, even in challenging scenarios.

Dense Continuous-Time Optical Flow from Events and Frames

1 code implementation25 Mar 2022 Mathias Gehrig, Manasi Muglikar, Davide Scaramuzza

To the best of our knowledge, our model is the first method that can regress dense pixel trajectories from event data.

Optical Flow Estimation

Bridging the Gap between Events and Frames through Unsupervised Domain Adaptation

1 code implementation6 Sep 2021 Nico Messikommer, Daniel Gehrig, Mathias Gehrig, Davide Scaramuzza

However, event-based vision has been held back by the shortage of labeled datasets due to the novelty of event cameras.

Event-based vision object-detection +2

E-RAFT: Dense Optical Flow from Event Cameras

1 code implementation24 Aug 2021 Mathias Gehrig, Mario Millhäusler, Daniel Gehrig, Davide Scaramuzza

Modern frame-based optical flow methods heavily rely on matching costs computed from feature correlation.

Feature Correlation Optical Flow Estimation

Time Lens: Event-Based Video Frame Interpolation

1 code implementation CVPR 2021 Stepan Tulyakov, Daniel Gehrig, Stamatios Georgoulis, Julius Erbach, Mathias Gehrig, Yuanyou Li, Davide Scaramuzza

However, while these approaches can capture non-linear motions they suffer from ghosting and perform poorly in low-texture regions with few events.

Optical Flow Estimation Video Frame Interpolation

TimeLens: Event-based Video Frame Interpolation

1 code implementation14 Jun 2021 Stepan Tulyakov, Daniel Gehrig, Stamatios Georgoulis, Julius Erbach, Mathias Gehrig, Yuanyou Li, Davide Scaramuzza

State-of-the-art frame interpolation methods generate intermediate frames by inferring object motions in the image from consecutive key-frames.

Optical Flow Estimation Video Frame Interpolation

DSEC: A Stereo Event Camera Dataset for Driving Scenarios

1 code implementation10 Mar 2021 Mathias Gehrig, Willem Aarents, Daniel Gehrig, Davide Scaramuzza

To address these challenges, we propose, DSEC, a new dataset that contains such demanding illumination conditions and provides a rich set of sensory data.

Autonomous Driving

AlphaPilot: Autonomous Drone Racing

no code implementations26 May 2020 Philipp Foehn, Dario Brescianini, Elia Kaufmann, Titus Cieslewski, Mathias Gehrig, Manasi Muglikar, Davide Scaramuzza

This paper presents a novel system for autonomous, vision-based drone racing combining learned data abstraction, nonlinear filtering, and time-optimal trajectory planning.

Navigate Trajectory Planning

Event-Based Angular Velocity Regression with Spiking Networks

1 code implementation5 Mar 2020 Mathias Gehrig, Sumit Bam Shrestha, Daniel Mouritzen, Davide Scaramuzza

Due to their spike-based computational model, SNNs can process output from event-based, asynchronous sensors without any pre-processing at extremely lower power unlike standard artificial neural networks.

regression

Video to Events: Recycling Video Datasets for Event Cameras

1 code implementation CVPR 2020 Daniel Gehrig, Mathias Gehrig, Javier Hidalgo-Carrió, Davide Scaramuzza

Event cameras are novel sensors that output brightness changes in the form of a stream of asynchronous "events" instead of intensity frames.

Object Recognition Semantic Segmentation

Towards Low-Latency High-Bandwidth Control of Quadrotors using Event Cameras

no code implementations11 Nov 2019 Rika Sugimoto Dimitrova, Mathias Gehrig, Dario Brescianini, Davide Scaramuzza

In particular, this paper addresses the problem of one-dimensional attitude tracking using a dualcopter platform equipped with an event camera.

Robotics Systems and Control Systems and Control

Visual Place Recognition with Probabilistic Vertex Voting

no code implementations11 Oct 2016 Mathias Gehrig, Elena Stumm, Timo Hinzmann, Roland Siegwart

We propose a novel scoring concept for visual place recognition based on nearest neighbor descriptor voting and demonstrate how the algorithm naturally emerges from the problem formulation.

Retrieval Visual Place Recognition

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