@inproceedings{Cohen:2000:HWM,
  optnote = {},
  optorganization = {},
  author = {Johnathan M. Cohen and John F. Hughes and Robert C. Zeleznik},
  optkey = {},
  optannote = {},
  optseries = {},
  editor = {Jean-Daniel Fekete and David Salesin},
  url = {http://graphics.cs.brown.edu/research/art/harold/},
  address = {New York},
  localfile = {papers/Cohen.2000.HWM.pdf},
  publisher = {ACM Press},
  doi = {http://doi.acm.org/10.1145/340916.340927},
  optmonth = {},
  citeseer = {http://citeseer.nj.nec.com/cohen00harold.html},
  optcrossref = {},
  booktitle = NPAR2000,
  optstatus = {OK},
  optvolume = {},
  optnumber = {},
  title = {{H}arold: {A} {W}orld {M}ade of {D}rawings},
  abstract = {The problem of interactively creating 3D scenes from 2D input is a
              compelling one, and recent progress has been exciting. We present
              our system, Harold, which combines ideas from existing techniques
              and introduces new concepts to make an interactive system for
              creating 3D worlds. The interface paradigm in Harold is
              drawing:all objects are created simply by drawing them with a 2D
              input device. Most of the 3D objects in Harold are collections of
              planar strokes that are reoriented in a view-dependent way as the
              camera moves through the world. Virtual worlds created in Harold
              are rendered with a stroke-based system so that a world will
              maintain a hand-drawn appearance as the user navigates through it.
              Harold is not suitable for representing certain classes of 3D
              objects, especially geometrically regular or extremely asymmetric
              objects. However, Harold supports a large enough class of objects
              that a user can rapidly create expressive and visually rich 3D
              worlds.},
  year = {2000},
  pages = {83--90},
}