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Découvertes récentes d'inhumations et d'une incinération datées du mésolithique en Ile-de-France

International audienceCet article présente cinq inhumations et une incinération mésolithiques récemment découvertes lors d'opérations d'archéologie préventive dans cinq sites d'Île-de-France, une région de France qui en était auparavant dépourvue. Faute d'élément datant-nologique repose sur des mesures radiocarbones effectuées directement sur des échantillons osseux, démontrant l'intérêt d'appliquer la méthode à des inhumations particulières, isolées. Leur description et leur comparaison avec d'autres tombes connues sur le territoire national contribuent à renouveler les connaissances sur les sépultures et les pratiques funéraires mésolithiques en France. Abstract cremation burial dating from the Mesolithic discove-de-France region, where data from the Mesolithic is rare. The burials contained no datable elements, so the radiocarbon dating was carried out on the bone matter, thus underlining the importance of such a method in dating isolated burials. The study of these renew interpretations of Mesolithic tombs and fune-rary practice in France

Découvertes récentes d'inhumations et d'une incinération datées du mésolithique en Ile-de-France

International audienceCet article présente cinq inhumations et une incinération mésolithiques récemment découvertes lors d'opérations d'archéologie préventive dans cinq sites d'Île-de-France, une région de France qui en était auparavant dépourvue. Faute d'élément datant-nologique repose sur des mesures radiocarbones effectuées directement sur des échantillons osseux, démontrant l'intérêt d'appliquer la méthode à des inhumations particulières, isolées. Leur description et leur comparaison avec d'autres tombes connues sur le territoire national contribuent à renouveler les connaissances sur les sépultures et les pratiques funéraires mésolithiques en France. Abstract cremation burial dating from the Mesolithic discove-de-France region, where data from the Mesolithic is rare. The burials contained no datable elements, so the radiocarbon dating was carried out on the bone matter, thus underlining the importance of such a method in dating isolated burials. The study of these renew interpretations of Mesolithic tombs and fune-rary practice in France

DIVA: Natural Navigation inside 3D Images Using Virtual Reality

International audienceAs three-dimensional microscopy becomes commonplace in biological research, there is an increasing need for researchers to be able to view experimental image stacks in a natural three-dimensional viewing context. Through stereoscopy and motion tracking, commercial virtual reality headsets provide a solution to this important visualization challenge by allowing researchers to view volumetric objects in an entirely intuitive fashion. With this motivation, we present DIVA, a user-friendly software tool that automatically creates detailed three-dimensional reconstructions of raw experimental image stacks that are integrated in virtual reality. In DIVA's immersive virtual environment, users can view, manipulate and perform volumetric measurements on their microscopy images as they would to real physical objects. In contrast to similar solutions, our software provides high-quality volume rendering with native TIFF file compatibility. We benchmark the software with diverse image types including those generated by confocal, light-sheet and electron microscopy. DIVA is available at https://diva.pasteur.fr and will be regularly updated

New Approach to Accelerated Image Annotation by Leveraging Virtual Reality and Cloud Computing

International audienceThree-dimensional imaging is at the core of medical imaging and is becoming a standard in biological research. As a result, there is an increasing need to visualize, analyze and interact with data in a natural three-dimensional context. By combining stereoscopy and motion tracking, commercial virtual reality (VR) headsets provide a solution to this critical visualization challenge by allowing users to view volumetric image stacks in a highly intuitive fashion. While optimizing the visualization and interaction process in VR remains an active topic, one of the most pressing issue is how to utilize VR for annotation and analysis of data. Annotating data is often a required step for training machine learning algorithms. For example, enhancing the ability to annotate complex three-dimensional data in biological research as newly acquired data may come in limited quantities. Similarly, medical data annotation is often time-consuming and requires expert knowledge to identify structures of interest correctly. Moreover, simultaneous data analysis and visualization in VR is computationally demanding. Here, we introduce a new procedure to visualize, interact, annotate and analyze data by combining VR with cloud computing. VR is leveraged to provide natural interactions with volumetric representations of experimental imaging data. In parallel, cloud computing performs costly computations to accelerate the data annotation with minimal input required from the user. We demonstrate multiple proof-of-concept applications of our approach on volumetric fluorescent microscopy images of mouse neurons and tumor or organ annotations in medical images

Report on the Marine Imaging Workshop 2022

Imaging is increasingly used to capture information on the marine environment thanks to the improvements in imaging equipment, devices for carrying cameras and data storage in recent years. In that context, biologists, geologists, computer specialists and end-users must gather to discuss the methods and procedures for optimising the quality and quantity of data collected from images. The 4th Marine Imaging Workshop was organised from 3-6 October 2022 in Brest (France) in a hybrid mode. More than a hundred participants were welcomed in person and about 80 people attended the online sessions. The workshop was organised in a single plenary session of presentations followed by discussion sessions. These were based on dynamic polls and open questions that allowed recording of the imaging community’s current and future ideas. In addition, a whole day was dedicated to practical sessions on image analysis, data standardisation and communication tools. The format of this edition allowed the participation of a wider community, including lower-income countries, early career scientists, all working on laboratory, benthic and pelagic imaging.This article summarises the topics addressed during the workshop, particularly the outcomes of the discussion sessions for future reference and to make the workshop results available to the open public

Report on the Marine Imaging Workshop 2022

Imaging is increasingly used to capture information on the marine environment thanks to the improvements in imaging equipment, devices for carrying cameras and data storage in recent years. In that context, biologists, geologists, computer specialists and end-users must gather to discuss the methods and procedures for optimising the quality and quantity of data collected from images. The 4 th Marine Imaging Workshop was organised from 3-6 October 2022 in Brest (France) in a hybrid mode. More than a hundred participants were welcomed in person and about 80 people attended the online sessions. The workshop was organised in a single plenary session of presentations followed by discussion sessions. These were based on dynamic polls and open questions that allowed recording of the imaging community’s current and future ideas. In addition, a whole day was dedicated to practical sessions on image analysis, data standardisation and communication tools. The format of this edition allowed the participation of a wider community, including lower-income countries, early career scientists, all working on laboratory, benthic and pelagic imaging. This article summarises the topics addressed during the workshop, particularly the outcomes of the discussion sessions for future reference and to make the workshop results available to the open public