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Differential operators on sketches via alpha contours
(Association for Computing Machinery, 2023-08)
A vector sketch is a popular and natural geometry representation depicting a 2D shape. When viewed from afar, the disconnected vector strokes of a sketch and the empty space around them visually merge into positive ...
Singularity-free frame fields for line drawing vectorization
State-of-the-art methods for line drawing vectorization rely on generated frame fields for robust direction disambiguation, with each of the two axes aligning to different intersecting curve tangents around junctions. ...