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Jan Quenzel

9 accepted papers

2021

Real-time Multi-Adaptive-Resolution-Surfel 6D LiDAR Odometry using Continuous-time Trajectory Optimization

IROS 2021poster

Simultaneous Localization and Mapping (SLAM) is an essential capability for autonomous robots, but due to high data rates of 3D LiDARs real-time SLAM is challenging. We propose a real-time method for 6D LiDAR odometry. Our approach combines a continuous-time B-Spline trajectory representation with a…

Cited by 47SourcecodeScholar
2020

Beyond Photometric Consistency: Gradient-based Dissimilarity for Improving Visual Odometry and Stereo Matching

ICRA 2020poster

Pose estimation and map building are central ingredients of autonomous robots and typically rely on the registration of sensor data. In this paper, we investigate a new metric for registering images that builds upon on the idea of the photometric error. Our approach combines a gradient orientation-b…

Cited by 6SourceScholar
2020

LatticeNet: Fast Point Cloud Segmentation Using Permutohedral Lattices

RSS 2020poster

Deep convolutional neural networks (CNNs) have shown outstanding performance in the task of semantically segmenting images. Applying the same methods on 3D data still poses challenges due to the heavy memory requirements and the lack of structured data. Here, we propose LatticeNet, a novel approach…

2019

SemanticKITTI: A Dataset for Semantic Scene Understanding of LiDAR Sequences

ICCV 2019oral

Semantic scene understanding is important for various applications. In particular, self-driving cars need a fine-grained understanding of the surfaces and objects in their vicinity. Light detection and ranging (LiDAR) provides precise geometric information about the environment and is thus a part of…

Cited by 2413PDFcodeScholar
2018

Fast Autonomous Flight in Warehouses for Inventory Applications

RA-L 2018

The past years have shown a remarkable growth in use-cases for micro aerial vehicles (MAVs). Conceivable indoor applications require highly robust environment perception, fast reaction to changing situations, and stable navigation, but reliable sources of absolute positioning such as global navigati

Cited by 93SourceScholar
2018

Keyframe-Based Photometric Online Calibration and Color Correction

IROS 2018poster

Finding the parameters of a vignetting function for a camera currently involves the acquisition of several images in a given scene under very controlled lighting conditions, a cumbersome and error-prone task where the end result can only be confirmed visually. Many computer vision algorithms assume…

Cited by 3SourceScholar
2017

Online depth calibration for RGB-D cameras using visual SLAM

IROS 2017poster

Modern consumer RGB-D cameras are affordable and provide dense depth estimates at high frame rates. Hence, they are popular for building dense environment representations. Yet, the sensors often do not provide accurate depth estimates since the factory calibration exhibits a static deformation. We p…

Cited by 9SourceScholar
2016

Efficient multi-camera visual-inertial SLAM for micro aerial vehicles

IROS 2016poster

Visual SLAM is an area of vivid research and bears countless applications for moving robots. In particular, micro aerial vehicles benefit from visual sensors due to their low weight. Their motion is, however, often faster and more complex than that of ground-based robots which is why systems with mu…

Cited by 49SourceScholar