A simple construction method for sequentially tidying up 2D online freehand sketches

Sheng-feng Qin, David Wright, Ivan Jordanov

    Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

    Abstract

    This paper presents a novel constructive approach to sequentially tidying up 2D online freehand sketches for further 3D interpretation in a conceptual design system. Upon receiving a sketch stroke, the system first identifies it as a 2D primitive and then automatically infers its 2D geometric constraints related to previous 2D geometry (if any). Based on recognized 2D constraints, the identified geometry will be modified accordingly to meet its constraints. The modification is realized in one or two sequent geometric constructions in consistence with its degrees of freedom. This method can produce 2D configurations without iterative procedures to solve constraint equations. It is simple and easy to use for a real-time application. Several examples are tested and discussed.
    Original languageEnglish
    Title of host publicationFull Paper Proceedings of the 14th International Conference in Central Europe on Computer Graphics, Visualization and Computer Vision (WSCG 2006)
    EditorsJoaquim Jorge, Vaclav Skala
    Place of PublicationPlzen
    PublisherUniversity of West Bohemia
    Pages271-278
    ISBN (Print)9788086943039
    Publication statusPublished - 2006
    EventWSCG 2006 - 14th International Conference in Central Europe on Computer Graphics, Visualization and Computer Vision'2006 - Plzen
    Duration: 1 Jan 2006 → …

    Conference

    ConferenceWSCG 2006 - 14th International Conference in Central Europe on Computer Graphics, Visualization and Computer Vision'2006
    Period1/01/06 → …

    Keywords

    • sketch-based design
    • geometric constraints solver
    • computer-human interface

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