Image Georeferencing Using GeoLibre in the Browser

Learn how to georeference images, scanned maps, and historical maps directly in your web browser using GeoLibre, with no desktop GIS software required. In this tutorial, I demonstrate how to georeference a University of Tennessee campus map by selecting ground control points, choosing a transformation method, evaluating residual errors, and aligning the image with a basemap. You'll also learn how to export the georeferenced result as a GeoTIFF, reload it into GeoLibre, compare it with the basemap, and share the finished map online. GeoLibre is a free and open-source, cloud-native GIS platform that runs in the browser, on desktop and mobile devices, and in Jupyter notebooks. Sample data: UTK Campus Map: https://assets.geolibre.app/data/utk-parking-map.jpg Control points: https://assets.geolibre.app/data/utk-parking-map-gcps.csv 00:00 Introduction to Image Georeferencing 01:44 Launching GeoLibre and Choosing a Basemap 02:44 Opening the Georeferencing Tool 03:20 Loading an Image 03:50 Choosing a Transformation Method 04:55 Selecting Ground Control Points 08:34 Checking Coordinates and Residuals 11:17 Evaluating Georeferencing Accuracy 11:30 Exporting Control Points and GeoTIFF 12:26 Adding the Georeferenced Image to the Map 12:59 Comparing Layers with the Swipe Tool 13:35 Loading the Exported GeoTIFF 14:07 Handling NoData and Transparency 14:42 Sharing the Georeferenced Map 15:29 Conclusion --------------------------------------------------------- 📌 More Resources: 📚 Get My Books on GeoAI, DuckDB, and GIS Programming: https://opengeopub.com/bundles/geopython 📺 GeoAI Playlist: https://www.youtube.com/playlist?list=PLAxJ4-o7ZoPcvENqwaPa_QwbbkZ5sctZE 👋 Let’s Connect: YouTube: https://youtube.com/@giswqs LinkedIn: https://www.linkedin.com/in/giswqs Twitter: https://twitter.com/giswqs Facebook: https://www.facebook.com/groups/opengeos