Automatic extraction of free-form surface features (FFSFs)

What is it about?

Automatic extraction of free-form surface features (FFSFs) using curvature continuity, ratio of change in principal curvatures and chain code algorithm. Represented using extracted separating curve (number and type) and influence region (the region enclosed by the separating curve).

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Why is it important?

► A new procedure to extract free-form surface features. ► Formal classification and representation of deformation surface features. ► FFSF recognition and extraction independent of the type of base surface and the geometry of the feature. ► ‘Closed’ and ‘saddle’ features included in the taxonomy. ► Representation and extraction based on topology and geometry. No template used.