Gilles-Antoine Nys

Gilles-Antoine Nys
University of Liège | ulg · Geomatics and Geometrology Unit

Master of Engineering

About

18
Publications
7,593
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131
Citations
Introduction
The main topic of the GANys researches studies the benefits/drawbacks of a "new generation" of Web GIS systems. It focuses on the use of JavaScript-related stacks: CityJSON (3D city modeling), NodeJS (JS runtime environment), SensorThings API (JS Sensors exchange format), MongoDB (NoSQL document), ...
Additional affiliations
September 2016 - September 2018
University of Liège
Position
  • Research Associate

Publications

Publications (18)
Conference Paper
Full-text available
The alteration of roof materials can be a potential source of pollution with negative effects on the environment and on human health. For instance, analyses of runoff water revealed high levels of metal traces but also polycyclic aromatic hydrocarbons and phthalates. Similarly, the alteration or combustion of asbestos contained in certain types of...
Article
Au même titre que le Référentiel à Grande Echelle (RGE) français, le Service Public de Wallonie (SPW) vise à mettre en place son propre Géoréférentiel. Ce référentiel est destiné à répondre à l’établissement d’une infrastructure d’information géographique dans la Communauté européenne selon la directive INSPIRE. Il consiste notamment à assurer la d...
Article
Le site de Chèvremont est connu dans l’histoire liégeoise depuis le Haut Moyen-Âge. L’archéologie a montré que la colline a été fréquentée depuis au moins la période néolithique. Intuitivement, tous les auteurs qui se sont rendus sur le site décrivent un endroit d’où le panorama est impressionnant. Nous tentons ici d’utiliser les analyses de visibi...
Article
The use of 3D city models is now common practice; many large cities have their own digital model. Resilient and sustainable management of these models is necessary in many cases, where an application could evolve over its lifecycle. The complexity of generic modeling standardization is often a limitation for a light and user-friendly usage and furt...
Article
Full-text available
The combination between dense point clouds and 3D vector objects permits new cartographic representation of urban information. This paper proposes an extension for the CityJSON encoding to support point clouds. Following the 3.0 CityGML specifications, attributes and features are added to the core module of v1.0.1 CityJSON. Two solutions are propos...
Article
Full-text available
The growing rate of urbanization and vertical urban development has aroused the significance of geo-related variables for property units disposed vertically within the same building. Among these, 3D indoor physical and outdoor environmental variables are impacting the property value for each building unit. However, in the literature, the identified...
Conference Paper
Full-text available
Cities are experiencing increased pressure on social, economic, and environmental sectors due to the rapid urbanisation and increasing risk owing to climate change affecting the urban environment. Solutions such as green roofs are often discussed in the context of smart and sustainable cities as they present a multi-functional and solution-oriented...
Article
Full-text available
The relevant insights provided by 3D City models greatly improve Smart Cities and their management policies. In the urban built environment, buildings frequently represent the most studied and modeled features. CityJSON format proposes a lightweight and developer-friendly alternative to CityGML. This paper proposes an improvement to the usability o...
Article
Full-text available
Point clouds generated from aerial LiDAR and photogrammetric techniques are great ways to obtain valuable spatial insights over large scale. However, their nature hinders the direct extraction and sharing of underlying information. The generation of consistent large-scale 3D city models from this real-world data is a major challenge. Specifically,...
Conference Paper
Full-text available
This paper proposes a solution to reduce the semantic gap between final users and data/processing providers in a web market place dedicated to remote sensing products. Nowadays, search engine are common tools on the Internet. Users are accustomed to use them and used to get tabular classification of provided answers. These smart agents are set up t...
Conference Paper
Full-text available
Semantic description of cultural heritage information is already widely structured through CIDOC CRM and its different extensions. This shared understanding of cultural heritage information has already proved its usefulness. Until now, despite its spatial and temporal data management proposition, lack standardization limited the possibilities in te...
Conference Paper
Full-text available
This paper proposes an ontology to structure and describe processing chains in the remote sensing field. These chains are made up of elementary elements (operations) organized in collections. The collection notion, including information about order and repeatability of the elements, is widely defined by using the relations between their constitutin...
Article
Full-text available
3D models derived from point clouds are useful in various shapes to optimize the trade-off between precision and geometric complexity. They are defined at different granularity levels according to each indoor situation. In this article, we present an integrated 3D semantic reconstruction framework that leverages segmented point cloud data and domai...
Article
Full-text available
p>Modelling cultural heritage is a research topic shared by a broad scientific community. Although this subject has been widely studied, it seems that some aspects still have to be tackled. This paper describes two CIDOC (ICOM’s International Committee for Documentation) Conceptual Reference Model (CRM) extension proposals (A & B) dedicated to stru...
Article
Full-text available
Digital investigations of the real world through point clouds and derivatives are changing how curators, cultural heritage researchers and archaeologists work and collaborate. To progressively aggregate expertise and enhance the working proficiency of all professionals, virtual reconstructions demand adapted tools to facilitate knowledge disseminat...