@article{Saito:1990:CRD,
  number = {3},
  month = aug,
  author = {Takafumi Saito and Tokiichiro Takahashi},
  series = CGPACS,
  optannote = {},
  editor = {Forest Baskett},
  localfile = {papers/Saito.1990.CRD.pdf},
  address = {New York},
  optkeywords = {comprehensible rendering, visualization, geometric property,
                 contour lines, edge enhancement, line drawing illustrations,
                 topographical maps, medical imaging, surface analysis},
  publisher = {ACM Press},
  doi = {http://doi.acm.org/10.1145/97880.97901},
  organization = {ACM SIGGRAPH},
  journal = SIGGRAPH90,
  citeseer = {http://citeseer.ist.psu.edu/context/1420849/0},
  volume = {24},
  optstatus = {abstract},
  title = {{C}omprehensible {R}endering of 3-{D} {S}hapes},
  abstract = {We propose a new rendering technique that produces 3-D images with
              enhanced visual comprehensibility. Shape features can be readily
              understood if certain geometric properties are enhanced. To
              achieve this, we develop drawing algo- rithms for discontinuities,
              edges, contour lines, and curved hatching. All of them are
              realized with 2-D image processing operations instead of line
              tracking processes, so that they can be efficiently combined with
              conventional surface rendering algorithms. Data about the
              geometric properties of the surfaces are preserved as Geometric
              Buffers (G-buffers). Each G-buffer contains one geometric property
              such as the depth or the normal vector of each pixel. By using
              G-buffers as intermediate results, artificial enhancement
              processes are separated from geometric processes (projection and
              hidden surface removal) and physical processes (shading and
              texture mapping), and performed as postprocesses. This permits a
              user to rapidly examine various combinations of enhancement
              techniques without excessive recompntation, and easily obtain the
              most comprehensible image. Our method can be widely applied for
              various purposes. Several of these, edge enhancement, line drawing
              illustrations, topographical maps, medical imaging, and surface
              analysis, are presented in this paper.},
  year = {1990},
  pages = {197--206},
}