Publications de Laurent Valentin Jospin

On the Perspectives of Image-to-Lidar Constraints in Dynamic Network Optimisation

Jan Skaloud, Davide Antonio Cucci, Laurent Valentin Jospin, Kyriaki Mouzakidou

The evolution of airborne mapping witnesses the introduction of hybrid lidar-camera systems to enhance data collection, i.e. to obtain simultaneously high-density point-cloud and texture. Yet, the common adjustment of both optical data streams is a nontriv ...

International Society for Photogrammetry and Remote Sensing2025

Generalized Closed-form Formulae for Feature-based Subpixel Alignment in Patch-based Matching

Laurent Valentin Jospin

Patch-based matching is a technique meant to measure the disparity between pixels in a source and target image and is at the core of various methods in computer vision. When the subpixel disparity between the source and target images is required, the cost ...

SPRINGER2025

Quality assessment of Airborne Image Spectrometry Data for the AVIRIS-4

Jan Skaloud, Laurent Valentin Jospin, Jesse Ray Murray Lahaye

The AVIRIS-4 is a state of the art imaging spectrometer developed by NASA-JPL for the consortium of Swiss universities ARES. Measurement campaigns using this instrument started in 2024. According to the agreement with NASA-JPL, all imagery produced by the ...

International Society for Photogrammetry and Remote Sensing2025

Reconstructing illusory camouflage patterns on moth wings using computer vision

Laurent Valentin Jospin

Monocular depth cues, such as shading, are fundamental for resolving three-dimensional information, such as an object's shape. Animal colour patterns may potentially exploit this mechanism of depth perception, generating false illusions for functions such ...

2025

The AVIRIS-4 Airborne Imaging Spectrometer

Jan Skaloud, Laurent Valentin Jospin, Jesse Ray Murray Lahaye

The Airborne Visible/Infrared Imaging Spectrometer-4 (AVIRIS-4) represents the next generation in the series of airborne imaging spectrometers built by NASA JPL. Commissioned by the Swiss ARES research consortium, AVIRIS-4 is geared towards delivering cutt ...

Institute of Electrical and Electronics Engineers (IEEE)2025

Mapping quality prediction for RTK/PPK-equipped micro-drones operating in complex natural environment

Jan Skaloud, Davide Antonio Cucci, Laurent Valentin Jospin, Emmanuel Pierre Quentin Clédat

Drone mapping with GNSS-assisted photogrammetry is a highly efficient method for surveying small -or medium- sized areas. However, the mapping quality is not intuitively predictable, particularly in complex environments (with steep and cluttered terrain), ...

2020

Embedded Polarizing Filters to Separate Diffuse and Specular Reflection

Laurent Valentin Jospin, Adam James Scholefield, Gilles Baechler

Polarizing filters provide a powerful way to separate diffuse and specular reflection; however, traditional methods rely on several captures and require proper alignment of the filters. Recently, camera manufacturers have proposed to embed polarizing micro ...

SPRINGER INTERNATIONAL PUBLISHING AG2019