Open Day + Good News

Tag: qgis

Semantic vs Instance Segmentation on Aerial Imagery

Semantic segmentation labels every pixel with a class: building or not. Instance segmentation draws every building as its own object.
Learn More

AI Agent for QGIS: The Complete Guide

How to use AI Agent in QGIS: install it, write your first request, stay in control, then 10 real runs, from georeferencing an old map to an HTML report.
Learn More

Greenfield vs Brownfield Sites: Meaning and Differences

A greenfield site has never been built on. A brownfield site has, and may still hold slabs, sheds or contamination. What each costs and how to tell them apart.
Learn More

How to Add a Basemap in QGIS: XYZ, WMS and Plugins

Browser panel, XYZ Tiles, double-click OpenStreetMap. Then Google, Esri and Bing by URL, national imagery by WMS, and which basemap a detection model can read.
Learn More

DSM vs DTM vs DEM: What's the Difference and Which to Use

A DSM is the top of everything: roofs, treetops, ground. A DTM is bare ground alone, and DEM usually means the same. Which one to use for flood, slope or 3D.
Learn More

Revue de presse du 4 septembre 2026

La GeoRDP de rentrée, avec des exercices de maths et de SVT pour affûter votre géo-logique !
Learn More

[Blog] A new direct way to connect Trimble receivers

Connect Trimble receivers directly to Mergin Maps with our new integration. Enjoy a seamless, single-tap setup and full access to high-accuracy GPS data.
Learn More

Colored site plan: the same block four ways

Flat, watercolor, pencil and glossy, all rendered from one aerial image of Letchworth Garden City. Every prompt in full, and where the model invented water.
Learn More

Detect Solar Panels in QGIS: 5 Methods

Check OpenStreetMap first. Then four ways to map rooftop PV from aerial imagery in QGIS, with the menu paths and where each one fails.
Learn More

Detect Swimming Pools in QGIS: 5 Methods

Start with QuickOSM on leisure=swimming_pool. Where the map is thin, use a segmentation model, threshold the blue, or run a water index. Five methods compared.
Learn More