Search Results for author: Anders Heyden

Found 9 papers, 4 papers with code

Generic Merging of Structure from Motion Maps with a Low Memory Footprint

no code implementations24 Mar 2021 Gabrielle Flood, David Gillsjö, Patrik Persson, Anders Heyden, Kalle Åström

We use these representations to perform map merging so that the algorithm is invariant to the merging order and independent of the choice of coordinate system.

Trust Your IMU: Consequences of Ignoring the IMU Drift

2 code implementations15 Mar 2021 Marcus Valtonen Örnhag, Patrik Persson, Mårten Wadenbäck, Kalle Åström, Anders Heyden

In this paper, we argue that modern pre-integration methods for inertial measurement units (IMUs) are accurate enough to ignore the drift for short time intervals.

Detailed 3D Human Body Reconstruction from Multi-view Images Combining Voxel Super-Resolution and Learned Implicit Representation

no code implementations11 Dec 2020 Zhongguo Li, Magnus Oskarsson, Anders Heyden

Then, taking the low resolution voxel grids which are generated by the coarse 3D models as input, the voxel super-resolution based on an implicit representation is learned through a multi-stage 3D convolutional neural network.

Super-Resolution

Efficient Real-Time Radial Distortion Correction for UAVs

1 code implementation8 Oct 2020 Marcus Valtonen Örnhag, Patrik Persson, Mårten Wadenbäck, Kalle Åström, Anders Heyden

In this paper we present a novel algorithm for onboard radial distortion correction for unmanned aerial vehicles (UAVs) equipped with an inertial measurement unit (IMU), that runs in real-time.

Minimal Solvers for Indoor UAV Positioning

1 code implementation16 Mar 2020 Marcus Valtonen Örnhag, Patrik Persson, Mårten Wadenbäck, Kalle Åström, Anders Heyden

In this paper we consider a collection of relative pose problems which arise naturally in applications for visual indoor UAV navigation.

Motion Estimation Navigate

A Unified Optimization Framework for Low-Rank Inducing Penalties

1 code implementation23 Jan 2020 Marcus Valtonen Örnhag, Carl Olsson, Anders Heyden

Lastly, we show on real non-rigid structure-from-motion (NRSfM) datasets, the issues that arise from using weighted nuclear norm penalties, and how this can be remedied using our proposed method.

Optimization and Control

Bilinear Parameterization For Differentiable Rank-Regularization

no code implementations27 Nov 2018 Marcus Valtonen Örnhag, Carl Olsson, Anders Heyden

Either the set of matrices with a given rank can be explicitly parametrized using a bilinear factorization, or low rank can be implicitly enforced using regularization terms penalizing non-zero singular values.

Second-order methods

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