Tag: qgis

An orthophoto is one aerial photograph corrected to a map. An orthomosaic is many of them stitched into one image. Which one you have, and where the seams are.

はじめにみなさん、こんにちは。MIERUNEでQGISエンジニアをしている、フランス出身のLayです。日本語に不自然なところがあるかもしれませんが、すみません。FOSS4G Hiroshima 2026に、発表者とワークショップ講師として参加し、2026年4月にリリースしたQGIS向けクラウドサービス「Kumoy」を紹介しました。グローバルFOSS4Gへの参加は、2023年のFOSS4G Priz...

Semantic segmentation labels every pixel with a class: building or not. Instance segmentation draws every building as its own object. On a terraced street the difference is one polygon against forty.

Describe a task in plain language and it runs in your open QGIS project: load data, run algorithms, style layers, build a layout. Every run can be undone.

A greenfield site has never been built on. A brownfield site has, and may still carry what the last use left behind. How to tell them apart in QGIS.

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.

A DSM is the height of the top of everything: roofs, treetops, bare ground. A DTM is bare ground alone. Subtract one from the other to get what stands on it.

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

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.

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