CAD Model Details via Curved Knot Lines and Truncated Powers

Malcolm A. Sabin, Chris Fellows, Jiri Kosinka*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

6 Citations (Scopus)
41 Downloads (Pure)


This paper describes a method for adding surface details to existing CAD models. Our approach is based on truncated powers, which allows us to align the added details with curved knot lines on the surface. Additionally, (truncated) powers give us precise control over the continuity of the perturbed surface across the (curved) knot lines. Our representation is compatible with current CAD/CAM practise and standards, and we showcase it on several examples.
Original languageEnglish
Article number103137
JournalComputer-Aided design
Early online date27-Oct-2021
Publication statusPublished - Feb-2022

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