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Sketch-based Modification of the Cubic B-Splines for the Pen-input Displays  

Kim, Dae-Hyun ((재)그래픽스연구원 Tiled Display Team)
Kim, Myoung-Jun (이화여자대학교 디지털미디어학부)
Publication Information
Journal of KIISE:Computer Systems and Theory / v.33, no.4, 2006 , pp. 205-215 More about this Journal
Abstract
Pen-input displays, such as LCD tablets and tablet PCs, are already popular for its usability in CAD design, in particular. in concept design phase. We propose an intuitive B-Spline modification scheme that can be used for the CAD systems targeting for such devices. Differently from the control point based modification schemes for the B-splines, our scheme relates user pen marking to determining the final shape of the target curve and surface. This, eventually, reduces time for interacting with the shape parameters (i.e., by control points or direct manipulators), which has been regarded as an unavoidable routine tasks for design. To prove its usability, we made an experiments with selected subjects who have been working for industrial design.
Keywords
Pen-input displays; B-Splines; Concept Design; CAD;
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