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Jan Skaloud

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Related publications (100)

Page 4 of 5

A Micro-Uav with the Capability of Direct Georeferencing

Jan Skaloud, Martin Rehak

This paper presents the development of a low cost UAV (Unmanned Aerial Vehicle) with the capability of direct georeferencing. The advantage of such system lies in its high maneuverability, operation flexibility as well as capability to acquire image data w ...

ISPRS Archives2013

Towards in-flight quality assessment of airborne laser scanning

Jan Skaloud, Phillip Tomé

One of the main problems of today's ALS is the lack of reliable data quality assessment within or shortly after the airborne survey campaign. The paper presents an in- flight quality monitoring tool that allows assessing the quality of the recorded data "o ...

2008

VDM-based UAV Attitude Determination in Absence of IMU Data

Jan Skaloud, Mehran Khaghani

The capability of a previously proposed VDM (vehicle dynamic model) based navigation method for UAVs is assessed in attitude determination without IMU data. This method utilizes the VDM as main process model within the navigation filter and treats data fro ...

IEEE2018

Rigorous approach to bore-sight self-calibration in airborne laser scanning

Jan Skaloud

We present a rigorous method for estimating some of the calibration parameters in airborne laser scanning (ALS), namely the three bore-sight angles and the range-finder offset. The technique is based on expressing the system calibration parameters within t ...

2006

Fusion of Photo with Airborne Laser Scanning

Jan Skaloud, Emmanuel Pierre Quentin Clédat

Photogrammetry and Laser-Scanning are usually considered as complementary. Integration of these two observation methods has the potential to blend their individual advantages. The resulting benefit is likely to be higher in drone airborne mapping, which pa ...

2020

Generalization of point-to-point matching for rigorous optimization in kinematic laser scanning

Jan Skaloud, Stéphane Guerrier, Aurélien Arnaud Brun

In the scope of rigorous sensor fusion in kinematic laser scanning, we present a qualitative improvement of an automated retrieval method of lidar-to-lidar 3D correspondences in terms of accuracy and speed, where correspondences are locally refined shifts ...

Elsevier BV2025

Automated Assessment of Digital Terrain Models Derived From Airborne Laser Scanning

Jan Skaloud, Philipp Schär

This paper presents the derivation of surface-related quality indicators describing the confidence-metrics of the final geo-products de- rived from airborne laser scanning (ALS). We first discuss the number of factors influencing the qual- ity of the digit ...

2012

Noise reduction and estimation in multiple micro-electro-mechanical inertial systems

Jan Skaloud, Stéphane Guerrier, Adrian Ulrich Wägli

This research studies the reduction and the estimation of the noise level within a redundant configuration of low-cost (MEMS-type) inertial measurement units (IMUs). Firstly, independent observations between units and sensors are assumed and the theoretica ...

IOP Publishing2010

Real-time registration of airborne laser data with sub-decimeter accuracy

Jan Skaloud, Phillip Tomé, Yannick Stebler

This paper presents a methodology for the precise registering of airborne laser data directly in flight with an accuracy that is sufficient for the majority of derived products, such as digital terrain models. We first present the strategy that integrates ...

2010

Research online: Robust tightly coupled GNSS/INS estimation for navigation

Jan Skaloud, Omar Garcia Crespillo

We designed a tightly-coupled integration between GNSS and inertial navigation systems (INS) where we modify the update step of a classical Extended Kalman Filter (EKF) to consider different robust estimators (such as M-estimators). We consider different f ...

2017

A computationally efficient platform for inertial sensor calibration

Jan Skaloud, Stéphane Guerrier

This paper presents the new open-source statistical software package for inertial sensor calibration. This platform is based on the Generalized Method of Wavelet Moments that was recently proposed to estimate simple and composite stochastic models that are ...

2015

Soil Moisture & Snow Properties Determination with GNSS in Alpine Environments: Challenges, Status, and Perspectives

Pierre-André Farine, Jan Skaloud, Cyril Botteron, Steven Vincent Weijs, Jérôme Leclère

Moisture content in the soil and snow in the alpine environment is an important factor, not only for environmentally oriented research, but also for decision making in agriculture and hazard management. Current observation techniques quantifying soil moist ...

2013

The use of wavelet transform for an automated initialization in GPS/MEMS-IMU integration

Jan Skaloud, Adrian Ulrich Wägli, Heidi Fournier

The main objective of this research is in automating the initialization phase of the MEMS-IMZ/GPS data integration. The motivation for this study is the special case where the before mentioned sensors are worn on a body (e.g. of an athlete) and where the u ...

2009

Camera Calibration Models and Methods for Corridor Mapping with UAVs

Jan Skaloud, Davide Antonio Cucci, Emmanuel Pierre Quentin Clédat

Camera calibration refers to the modeling of the relationship between the coordinates of object points and their projections on the image plane. This is usually done by parametric models that describe the physical properties of the lens systems and camera ...

2020

Time synchronization of consumer cameras on Micro Aerial Vehicles

Jan Skaloud, Martin Rehak

This article discusses the problem of time registration between navigation and imaging components on Micro Aerial Vehicles (MAVs). Accurate mapping with MAVs is gaining importance in applications such as corridor mapping, road and pipeline inspections or m ...

Elsevier2017

Requirements for an orientation and calibration standard for digital aerial cameras and related sensors

Jan Skaloud

Though the ISPRS has had standardization on its agenda for a long time the progress was slow and the output of completed document is still limited. The reasons are manifold: lack of awareness of standardization, necessary alignment with the standardization ...

2006

Vers une analyse de qualité des données de laser aéroporté en temps réel

Jan Skaloud, Phillip Tomé

Un des problèmes majeurs des systèmes laser aéroportés (ALS) est l'estimation fiable de la qualité des données en vol ou immédiatement après. Cet article présente un outil qui permet d'estimer la qualité et l'intégrité des données saisies en temps réel (TR ...

2008

Rigorous Integration of Inertial Navigation with Optical Sensors by Dynamic Networks

Jan Skaloud, Denis Rouzaud

This paper presents a new concept for simultaneous modeling and adjusting of raw inertial observations with optical and (if available) GNSS data streams. The presented post-mission procedure of dynamic networks allows treating dynamic (e.g. inertial) and s ...

Cambridge University Press2011

UAV in the advent of the twenties: Where we stand and what is next

Jan Skaloud, Davide Antonio Cucci

The use of Unmanned Aerial Vehicles (UAVs) has surged in the last two decades, making them popular instruments for a wide range of applications, and leading to a remarkable number of scientific contributions in geoscience, remote sensing and engineering. H ...

2022

Open-source software-operated CMOS camera for real-time mapping

Jan Skaloud, Hervé Gontran

Accurate time registration, georeferencing, and instantaneous feature extraction are important challenges for real-time mapping systems. The Geodetic Engineering Laboratory (TOPO) at the EPFL has designed a mobile platform to automatically determine the ge ...

2006