User Interface Research Group - Masatomo Kobayashi - Sketching 3D Curves with Single ...

Sketching 3D Curves with Single Strokes/Views

Keeping the virtual velocity constant A sketched 3D curve

What was this study about?

This study tried to propose a new sketching technique that allows users to draw 3D curves using a hand-drawn trajectory on a 2D screen. A free stroke trajectory drawn on the 2D canvas is projected into the air in the virtual 3D space, keeping the virtual velocity constant, v. Considering the speed of stroke drawing, this technique would make users free from unnecessary overheads to determine the depth of strokes, such as switching viewpoints or drawing the shadow of curves.

Why was this study aborted?

It was extremely difficult for users to control the speed of drawing. They could not draw any 3D shapes except very rough curves and spirals. We think, however, the speed-based strategy has potential to enhance existing systems.

KOBAYASHI Masatomo <kobayash at>
Last Updated: Tue, 08-Apr-2003 JST