Published March 18, 2026 | Version v3

TagLab Segmentation

  • 1. ROR icon Lund University
  • 2. EDMO icon Institute of Information Science and Technologies "Alessandro Faedo" - ISTI

Description

This tutorial presents the main segmentation tools available in TagLab and demonstrates how to begin working on a project by adding an orthographic image as a new map. It explains how to define image metadata such as acquisition date and pixel size, which are required for measurements and multi-temporal analysis. The video then introduces different annotation and segmentation approaches, including annotation points, AI-assisted segmentation tools (such as positive and negative click segmentation, watershed segmentation, and SAM-based segmentation), as well as manual freehand segmentation and region editing. These tools allow users to identify regions in the image, assign labels, and export the resulting annotations and statistics for further analysis.

This tutorial builds on previously produced tutorials: one focusing on the georeferencing of 3D models  and another explaining how to to generate vertical orthographic projections (e.g., building façades or architectural sections) in RealityScan 

Files

TagLab_Segmentation_V2.mp4

Files (172.3 MB)

Name Size Download all
md5:de6c540d6f671670b687a2aabf0e5a55
29.7 MB Download
md5:baf06c489bd51682059c7a7b3985a5b9
33.4 kB Download
md5:74af7be69c2914175586fdcc710dc62e
142.6 MB Preview Download

Additional details

Related works

Requires
Lesson: 10.5281/zenodo.18874281 (DOI)