Shading-based surface editing

We present a system for free-form surface modeling that allows a user to modify a shape by changing its rendered, shaded image using stroke-based drawing tools. User input is translated into a set of tangent and positional constraints on the surface. A new shape, whose rendered image closely approximates user input, is computed using an efficient and stable surface optimization procedure. We demonstrate how several types of free-form surface edits which may be difficult to cast in terms of standard deformation approaches can be easily performed using our system. CR Categories: I.3.6 [Methodology and Techniques]:Interaction techniques I.3.5 [Computational Geometry and Object Modeling]: Geometric algorithms, languages, and systems

• Type: Journal
• Year: 2008
• Where: TOG
• Authors: Yotam I. Gingold, Denis Zorin
• Keywords: Free-form Surface, Stable Surface Optimization, TOG 2008, User Input