filename     : Nor12.pdf
entry        : journal
conference   : 
pages        : 2516-2527
year         : 2012
month        : December
title        : Smart Scribbles for Sketch Segmentation
subtitle     :
author       : Noris, G. and Sykora, D. and Shamir, A. and Coros, S. and Whited, B. and Simmons, M. and Hornung, A. and Gross, M. and Sumner, R.
booktitle    : Computer Graphics Forum
ISSN/ISBN    : 1467-8659
editor       : 
publisher    : Blackwell Publishing Ltd
publ.place   : 
volume       : 31
issue        : 8
language     : English
keywords     : digital sketches, interactive segmentation, scribble-based user interface, energy minimization
abstract     : We present 'Smart Scribbles'-a new scribble-based interface for user-guided segmentation of digital sketchy drawings. In contrast to previous approaches based on simple selection strategies, Smart Scribbles exploits richer geometric and temporal information, resulting in a more intuitive segmentation interface. We introduce a novel energy minimization formulation in which both geometric and temporal information from digital input devices is used to define stroke-to-stroke and scribble-to-stroke relationships. Although the minimization of this energy is, in general, an NP-hard problem, we use a simple heuristic that leads to a good approximation and permits an interactive system able to produce accurate labellings even for cluttered sketchy drawings. We demonstrate the power of our technique in several practical scenarios such as sketch editing, as-rigid-as-possible deformation and registration, and on-the-fly labelling based on pre-classified guidelines.