Shading-Based Surface Editing
Yotam Gingold and Denis Zorin
In Proceedings of SIGGRAPH 2008, Los Angeles, USA, August 2008.

Paper (14M)
Video: QuickTime (34M) | YouTube
Presentation: QuickTime (missing notes) (7M) | HTML (missing embedded movies) | PDF (with notes) (10M)

BibTeX can be found on the ACM page.

Abstract

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.