Search Results for author: Andreas Wieser

Found 10 papers, 4 papers with code

DEFLOW: Self-supervised 3D Motion Estimation of Debris Flow

no code implementations5 Apr 2023 Liyuan Zhu, Yuru Jia, Shengyu Huang, Nicholas Meyer, Andreas Wieser, Konrad Schindler, Jordan Aaron

Our model achieves state-of-the-art optical flow and depth estimation on our dataset, and fully automates the motion estimation for debris flows.

Autonomous Driving Depth Estimation +4

Dynamic 3D Scene Analysis by Point Cloud Accumulation

1 code implementation25 Jul 2022 Shengyu Huang, Zan Gojcic, Jiahui Huang, Andreas Wieser, Konrad Schindler

Compared to state-of-the-art scene flow estimators, our proposed approach aims to align all 3D points in a common reference frame correctly accumulating the points on the individual objects.

Autonomous Vehicles Semantic Segmentation +1

Weakly Supervised Learning of Rigid 3D Scene Flow

1 code implementation CVPR 2021 Zan Gojcic, Or Litany, Andreas Wieser, Leonidas J. Guibas, Tolga Birdal

We propose a data-driven scene flow estimation algorithm exploiting the observation that many 3D scenes can be explained by a collection of agents moving as rigid bodies.

Autonomous Driving Scene Flow Estimation +2

An iterative scheme for feature based positioning using a weighted dissimilarity measure

no code implementations20 May 2019 Caifa Zhou, Andreas Wieser

In the positioning stage, the weights control the contribution of each feature to the dissimilarity measure, which in turn quantifies the difference between the set of online measured features and the fingerprints stored in the RFM.

Position

CDM: Compound dissimilarity measure and an application to fingerprinting-based positioning

no code implementations16 May 2018 Caifa Zhou, Andreas Wieser

This proposed compound dissimilarity measure (CDM) is applicable to quantify similarity of collections of attribute/feature pairs where not all attributes are present in all collections.

Attribute

Jaccard analysis and LASSO-based feature selection for location fingerprinting with limited computational complexity

no code implementations21 Nov 2017 Caifa Zhou, Andreas Wieser

We propose an approach to reduce both computational complexity and data storage requirements for the online positioning stage of a fingerprinting-based indoor positioning system (FIPS) by introducing segmentation of the region of interest (RoI) into sub-regions, sub-region selection using a modified Jaccard index, and feature selection based on randomized least absolute shrinkage and selection operator (LASSO).

feature selection Position

WiFi based trajectory alignment, calibration and easy site survey using smart phones and foot-mounted IMUs

no code implementations2 Jun 2017 Yang Gu, Caifa Zhou, Andreas Wieser, Zhimin Zhou

Foot-mounted inertial positioning (FMIP) can face problems of inertial drifts and unknown initial states in real applications, which renders the estimated trajectories inaccurate and not obtained in a well defined coordinate system for matching trajectories of different users.

Application of backpropagation neural networks to both stages of fingerprinting based WIPS

no code implementations14 Mar 2017 Caifa Zhou, Andreas Wieser

We propose a scheme to employ backpropagation neural networks (BPNNs) for both stages of fingerprinting-based indoor positioning using WLAN/WiFi signal strengths (FWIPS): radio map construction during the offline stage, and localization during the online stage.

Position

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