Engineering Drawing Segmentation - Wortel AI annotation portfolio

Service route traced through dense mechanical line work - annotated — Service route traced through dense mechanical line work

Service route traced through dense mechanical line work - source — Service route traced through dense mechanical line work

Equipment symbols and dimension blocks marked separately - annotated — Equipment symbols and dimension blocks marked separately

Equipment symbols and dimension blocks marked separately - source — Equipment symbols and dimension blocks marked separately

Room boundary following the internal wall face - annotated — Room boundary following the internal wall face

Room boundary following the internal wall face - source — Room boundary following the internal wall face

Hatched zone kept distinct from the region beneath it - annotated — Hatched zone kept distinct from the region beneath it

Hatched zone kept distinct from the region beneath it - source — Hatched zone kept distinct from the region beneath it

Challenges

Class separation rests on line weight and hatch pattern rather than colour or texture.
Service routes cross wall runs and dimension lines at the same pixel.
Symbol conventions differ between sheets from different practices.
Dense annotation zones leave very little clear space between elements.
Scanned and re-exported sheets carry compression artefacts along thin lines.
Room boundaries are implied by wall geometry rather than drawn as a closed shape.

Project overview

Architectural and building-services drawings were segmented so that room extents, service routes and annotation blocks could be lifted from a flat CAD export into structured data.

Drawings are an unusual annotation target. There is no texture or colour to separate classes, only line weight, hatch pattern and symbol convention, and a single sheet can carry several overlapping layers of information at once.

Dataset