Title: Interpretation of Overtracing Freehand Sketching for Geometric Shapes
Authors: Ku, Day Chyi
Qin, Sheng-Feng
Wright, David K.
Citation: WSCG '2006: Full Papers Proceedings: The 14-th international Conference in Central Europe on Computer Graphics, Visualization and Computer Vision 2006: University of West Bohemia, Plzen, Czech Republic, January 31 – February 2, 2006, p. 263-270.
Issue Date: 2006
Publisher: Václav Skala - UNION Agency
Document type: konferenční příspěvek
URI: http://wscg.zcu.cz/WSCG2006/Papers_2006/Full/!WSCG2006_Full_Proceedings_Final.pdf
ISBN: 80-86943-03-8
Keywords: 3D modelování;geometrické tvary;kaligrafická rozhraní;design;skicování
Keywords in different language: 3D modelling;geometric shapes;calligraphic interfaces;design;sketching
Abstract: This paper presents a novel method for interpreting overtracing freehand sketch. The overtracing strokes are interpreted as sketch content and are used to generate 2D geometric primitives. The approach consists of four stages: stroke classification, strokes grouping and fitting, 2D tidy-up with endpoint clustering and parallelism correction, and in-context interpretation. Strokes are first classified into lines and curves by a linearity test. It is followed by an innovative strokes grouping process that handles lines and curves separately. The grouped strokes are fitted with 2D geometry and further tidied-up with endpoint clustering and parallelism correction. Finally, the in-context interpretation is applied to detect incorrect stroke interpretation based on geometry constraints and to suggest a most plausible correction based on the overall sketch context. The interpretation ensures sketched strokes to be interpreted into meaningful output. The interface overcomes the limitation where only a single line drawing can be sketched out as in most existing sketching programs, meanwhile is more intuitive to the user.
Rights: © Václav Skala - UNION Agency
Appears in Collections:WSCG '2006: Full Papers Proceedings

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