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Jan Skaloud

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Publications associées (100)

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

Le filtre de Kalman unscented - outil performant en géodésie cinématique

Adrian Wägli, Jan Skaloud, Véronique Constantin

Le filtre de Kalman étendu (EKF) est un algorithme très répandu en estimation séquentielle. Celui-ci permet l'estimation de variables d'état et de leur covariance à l'aide de modèles. Pour ca faire, une linéarisation de ces modèles est nécessaire, ce qui c ...

2008

Vision-aided inertial navigation system for robotic mobile mapping

Jan Skaloud, Fadi Atef Bayoud

A mapping system by vision-aided inertial navigation was developed for areas where GNSS signals are unreachable. In this framework, a methodology on the integration of vision and inertial sensors is presented, analysed and tested. The system employs the me ...

2008

Accurate Trajectory and Orientation of a Motorcycle derived from low-cost Satellite and Inertial Measurement Systems

Christophe Prongué, Alain Schorderet, Adrian Wägli, Jan Skaloud

Inertially aided satellite positioning can bring its benefits to all disciplines in which detailed knowledge of the trajectory is a prerequisite for improving performance. In motorcycling for instance, the determination of slips of tires requires the deter ...

2008

Theory and Reality of Direct Georeferencing in National Coordinates

Jan Skaloud

2008

Towards Automated LiDAR Boresight Self-calibration

Jan Skaloud

This paper focuses on practical aspects when performing boresight calibration in airborne laser scanning using rigorous methodology implemented in LIBOR software. LIBOR technique, introduced by (Skaloud and Lichti, 2006), is based on expressing the boresig ...

2007

Accuracy Estimation for Laser Point Cloud Including Scanning Geometry

Jan Skaloud

Individual points produced by airborne laser scanning (ALS) may have large variation in their accuracy, a fact that is often omitted in the subsequent derivation of digital terrain models. The accuracy of a single point is governed by three main factors: F ...

2007

L'analyse de performance sportive à l'aide d'un système GPS/INS low-cost: évaluation de capteurs inertiels de type MEMS

Adrian Wägli, Jan Skaloud, Jean-Marie Bonnaz

Les skieurs s'intéressent au GPS (Global Positioning System) pour évaluer leurs performances. Les positions enregistrées durant les entraînements et les courses permettent d'analyser les trajectoires et de comparer vitesses, accélérations et autres paramèt ...

2007

Turning Point - Trajectory Analysis for Skiers

Adrian Wägli, Jan Skaloud

As with a growing number of athletes, competitive skiers are looking to GNSS technology to help evaluate and improve their performance. Positions logged during practice runs or races can be transformed into 3-D models of the exact trajectories skied to mea ...

2007

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

Jan Skaloud, Hervé Gontran, Nicolas Janvier

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

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

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

An eye for landscape - rapid aerial mapping with handheld sensors

Julien Vallet, Otto Kölbl, Jan Skaloud, Grégory Veyssiere

This portable system offers fast deployment with no recalibration and maps both vertical and horizontal features while maintaining optimal flight parameters. The geo-referenced image and 3D point-cloud data can be processed into digital terrain models, dig ...

2006

An Eye for Landscapes - Rapid Aerial Mapping with Handheld Sensors

Julien Vallet, Otto Kölbl, Jan Skaloud, Grégory Veyssiere

This portable system offers fast deployment with no recalibration and maps both vertical and horizontal features while maintaning optimal flight parameters. The geo-referenced image and 3D point-cloud data can be processed into digital terrain models, digi ...

2006

Precise Road Geometry for Integrated Transport Safety Systems

Pierre-Yves Gilliéron, Jan Skaloud, Hervé Gontran

A safer mobility is a key concern for the strategy of the European governments and automotive industries. At the moment, a new generation of Intelligent Integrated Transport Safety Systems (IITSS) offers a promising potential to address this issue. Such co ...

2005

HELIMAP: Digital imagery/Lidar handheld airborne mapping system for natural hazard monitoring

Julien Vallet, Jan Skaloud

2005

Photobus on its Way to Real-time Mapping

Pierre-Yves Gilliéron, Jan Skaloud, Hervé Gontran

2005

Integrating Photogrammetry and Inertial Sensors for Robotics Navigation and Mapping

Bertrand Merminod, Jan Skaloud, Fadi Atef Bayoud

Integrating visual and inertial sensors has become a common practice in navigation due to the increase in computer power, in algorithms advancement and in sensor improvements. One of the problems yet to be solved is the Simultaneous Localisation And Mappin ...

2005

Exploring Bidirectional GPRS Capabilities in GNSS Positioning

Jan Skaloud, Marco Philipp Lehmann, Hervé Gontran

2005

HELIMAP: Rapid Large Scale Mapping Using Handheld LiDAR/CCD/GPS/INS Sensors on Helicopters

Julien Vallet, Jan Skaloud, Grégory Veyssiere

The HELIMAP is a portable mapping system for quick helicopter deployment. It integrates high accuracy navigation sensors (GPS/INS) with Airborne Laser Scanner (ALS) and high-resolution digital (CCD) camera. This paper presents the system hardware and softw ...

2005

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