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Where Do People Draw Lines?
Communications of the ACM, January 2012

Forrester Cole, Aleksey Golovinskiy, Alex Limpaecher,
Heather Stoddart Barros, Adam Finkelstein, Thomas Funkhouser,
Szymon Rusinkiewicz


Abstract

This paper presents the results of a study in which artists made line drawings intended to convey specific 3D shapes. The study was designed so that drawings could be registered with rendered images of 3D models, supporting an analysis of how well the locations of the artistsí lines correlate with other artistsí, with current computer graphics (CG) line definitions, and with the underlying differential properties of the 3D surface. Lines drawn by artists in this study largely overlapped one another, particularly along the occluding contours of the object. Most lines that do not overlap con- tours overlap large gradients of the image intensity and correlate strongly with predictions made by recent line-drawing algorithms in CG. A few were not well described by any of the local properties considered in this study. The result of our work is a publicly available data set of aligned drawings, an analysis of where lines appear in that data set based on local properties of 3D models, and algorithms to predict where artists will draw lines for new scenes.

Citation (BibTeX)

Forrester Cole, Aleksey Golovinskiy, Alex Limpaecher, Heather Stoddart Barros, Adam Finkelstein, Thomas Funkhouser, and Szymon Rusinkiewicz. Where Do People Draw Lines? Communications of the ACM 55(1):107-115, January 2012.

Links
  This article [at CACM]
  This earlier related article [local page] appeared in SIGGRAPH/TOG.