@phdthesis{Laerhoven:2006:ESF,
  opturl = {},
  month = jun,
  optaddress = {},
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  author = {Tom Van Laerhoven},
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  abstract = {Since the introduction of computers, a lot of effort has gone into
              the research on applications that enable a user to create images
              for their artistic value. In case of interactive systems that try
              to provide a digital equivalent of the traditional painting
              process, however, most still produce images that appear too
              artificial and lack the ``natural look'' and complexity that can
              be found in real paintings. Especially capturing the ambient
              behavior of watery paints like watercolor, gouache and Oriental
              ink, which run, drip and diffuse, is a challenging task to perform
              in real-time. For this reason, artists still prefer to use
              traditional methods. The advantages of such a paint system are
              numerous, however, as it allows to fully exploit the flexibility
              of the digital domain, and perform all sorts of ``non-physical''
              operations. In this dissertation we present a physically-based,
              interactive paint system that supports the creation of images with
              watery paint. We mainly target watercolor paint medium, but the
              model is general enough to simulate also related media like
              gouache and Oriental ink. In order to create a software system
              that is easy to maintain, change and extend, we first outline a
              component-based framework that is able to curb the complexity of
              building physically-based applications. The framework uses XML to
              provide a uniform description of the system's composition out of
              components. The cornerstone of the paint system is embodied by the
              canvas model, which adopts specialized algorithms, both
              physically-based and empirically-based, on three different layers
              for the purpose of simulating paint behavior. Two implementations
              of the canvas model are presented: the first relies on a
              high-performance cluster (HPC) to perform a parallel simulation,
              while the second uses programmable graphics hardware. The second
              implementation is extended to a full virtual paint environment:
              ``WaterVerve'', which features the Kubelka-Munk diffuse
              reflectance algorithm for rendering paint, a deformable 3D brush
              model and a set of artistic tools that fully exploit the
              physically-based nature of the system.},
  title = {{A}n {E}xtensible {S}imulation {F}ramework {S}upporting
           {P}hysically-based {I}nteractive {P}ainting},
  school = {Transnational University Limburg},
  localfile = {papers/Laerhoven.2006.ESF.pdf},
  year = {2006},
}