@inproceedings{Coconu:2006:RPI,
  optpostscript = {},
  optorganization = {},
  author = {Liviu Coconu and Oliver Deussen and Hans-Christian Hege},
  optkey = {},
  optannote = {},
  optseries = {},
  editor = {Doug DeCarlo and Lee Markosian},
  address = {New York},
  localfile = {papers/Coconu.2006.RPI.pdf},
  optisbn = {},
  publisher = {ACM Press},
  optkeywords = {},
  doi = {http://doi.acm.org/10.1145/1124728.1124734},
  optmonth = {},
  optciteseer = {},
  opturl = {},
  optcrossref = {},
  optwww = {},
  booktitle = NPAR2006,
  optvolume = {},
  optnumber = {},
  abstract = {Non-photorealistic rendering has been proven to be particularly
              efficient in conveying and transmitting selected visual
              information. Our paper presents a NPR rendering pipeline that
              supports pen-and-ink illustration for, but not limited to, complex
              landscape scenes in real time. This encompasses a simplification
              framework using clustering which enables new approaches to
              efficient and coherent rendering of stylized silhouettes, hatching
              and abstract shading. Silhouette stylization is performed in
              image-space. This avoids explicit computation of connected lines.
              Further, coherent hatching of the tree foliage is performed using
              an approximate view-dependent parameterization computed on-the-fly
              within the same simplification framework. All NPR algorithms are
              integrated with photorealistic rendering, allowing seamless
              transition and combination between a variety of photorealistic and
              non-photorealistic drawing styles.},
  title = {{R}eal-{T}ime {P}en-and-{I}nk {I}llustration of {L}andscapes},
  year = {2006},
  pages = {27--35},
}