Reading #21: Teddy: A Sketching Interface for 3D Freeform Design (Igarashi)

Comments

Jonathan

Summary

In this paper they introduce the concept of free sketching in 2D to create 3D shapes in a easy way. Teddy is an application that uses pen-input devices to allow the users to sketch and interact in the 2D space to create a 3D polygonal surface in a more creative manner. Unlike most 3D modeling tools teddy allows easy creation of freeform sketchy models in 3D which makes it ideal for fast prototyping and new users. The project uses recognition both for sketching and for gesture commands.
A novel user interface converts basic strokes in 3D shapes that can be rotated and edited. The edit commands include extruding shapes, smoothing and cutting. The final result is a 3D mesh that can be the input of the multiple tools available for 3D rendering and processing. The implementation was made in Java and exposed to the public for user studies.

Discussion

The application is very interesting and novel and allows creative users to approach more comfortably to 3D computer models. The paper shows good insight of what the application is capable to do and has a detailed explanation of the user interface and the resulting output. However I was expecting more in the implementation details in terms of gesture and sketch recognition, also they lack conclusions of their achievements. I think the ideas were good enough to expand more on sections 6-8 of the paper.