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[FB+05]  A Pointillism Style for the Non-Photorealistic Display of Augmented Reality Scenes

Fischer:2005:PSN (Technical report)
Author(s)Fischer J. and Bartz D.
Title« A Pointillism Style for the Non-Photorealistic Display of Augmented Reality Scenes »
NumberWSI-2005-05
InstitutionWilhelm Schickard Institute for Computer Science, Graphical-Interactive Systems (WSI/GRIS), University of Tübingen
Year2005
AddressGermany
URLhttp://w210.ub.uni-tuebingen.de/dbt/volltexte/2005/1720/

Abstract
The ultimate goal of augmented reality is to provide the user with a view of the surroundings enriched by virtual objects. Practically all augmented reality systems rely on standard real-time rendering methods for generating the images of virtual scene elements. Although such conventional computer graphics algorithms are fast, they often fail to produce sufficiently realistic renderings. The use of simple lighting and shading methods, as well as the lack of knowledge about actual lighting conditions in the real surroundings, cause virtual objects to appear artificial. We have recently proposed a novel approach for generating augmented reality images. Our method is based on the idea of applying stylization techniques for reducing the visual realism of both the camera image and the virtual graphical objects. Special non-photorealistic image filters are applied to the camera video stream. The virtual scene elements are rendered using non-photorealistic rendering methods. Since both the camera image and the virtual objects are stylized in a corresponding way, they appear very similar. As a result, graphical objects can become indistinguishable from the real surroundings. Here, we present a new method for the stylization of augmented reality images. This approach generates a painterly ``brush stroke'' rendering. The resulting stylized augmented reality video frames look similar to paintings created in the ``pointillism'' style. We describe the implementation of the camera image filter and the non-photorealistic renderer for virtual objects. These components have been newly designed or adapted for this purpose. They are fast enough for generating augmented reality images in real-time and are customizable. The results obtained using our approach are very promising and show that it improves immersion in augmented reality.

BibTeX code
@techreport{Fischer:2005:PSN,
  optpostscript = {},
  www =
         {http://www.gris.uni-tuebingen.de/~fischer/janfischer.com/publications/Fischer05_BrushStroke_TechRep.pdf},
  number = {WSI-2005-05},
  month = may,
  author = {Jan Fischer and Dirk Bartz},
  optkey = {},
  optannote = {},
  opttype = {},
  url = {http://w210.ub.uni-tuebingen.de/dbt/volltexte/2005/1720/},
  localfile = {papers/Fischer.2005.PSN.pdf},
  address = {Germany},
  optkeywords = {},
  optciteseer = {},
  optdoi = {},
  abstract = {The ultimate goal of augmented reality is to provide the user with
              a view of the surroundings enriched by virtual objects.
              Practically all augmented reality systems rely on standard
              real-time rendering methods for generating the images of virtual
              scene elements. Although such conventional computer graphics
              algorithms are fast, they often fail to produce sufficiently
              realistic renderings. The use of simple lighting and shading
              methods, as well as the lack of knowledge about actual lighting
              conditions in the real surroundings, cause virtual objects to
              appear artificial. We have recently proposed a novel approach for
              generating augmented reality images. Our method is based on the
              idea of applying stylization techniques for reducing the visual
              realism of both the camera image and the virtual graphical
              objects. Special non-photorealistic image filters are applied to
              the camera video stream. The virtual scene elements are rendered
              using non-photorealistic rendering methods. Since both the camera
              image and the virtual objects are stylized in a corresponding way,
              they appear very similar. As a result, graphical objects can
              become indistinguishable from the real surroundings. Here, we
              present a new method for the stylization of augmented reality
              images. This approach generates a painterly ``brush stroke''
              rendering. The resulting stylized augmented reality video frames
              look similar to paintings created in the ``pointillism'' style. We
              describe the implementation of the camera image filter and the
              non-photorealistic renderer for virtual objects. These components
              have been newly designed or adapted for this purpose. They are
              fast enough for generating augmented reality images in real-time
              and are customizable. The results obtained using our approach are
              very promising and show that it improves immersion in augmented
              reality.},
  title = {{A} {P}ointillism {S}tyle for the {N}on-{P}hotorealistic {D}isplay of
           {A}ugmented {R}eality {S}cenes},
  year = {2005},
  institution = {Wilhelm Schickard Institute for Computer Science,
                 Graphical-Interactive Systems (WSI/GRIS), University of
                 T{\"u}bingen},
}

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