projects
non-photorealistic rendering
Cupid mesh illustration
Painterly rendering
Reconstruction of Giorgio de Chirico's
Mystery and Melancholy of a Street
Painting style "learned" by example
Over the centuries, visual artists developed a wide variety of valuable techniques for making expressive, pleasing, and communicative imagery -- this includes ways of painting, drawing, sculpting, and so forth. However, 3D computer graphics tools are typically designed as approximations to a realistic photographic model. Our goal is to expand the range of rendering styles available to artists and designers for creating images, animations, and interactive environments; in effect, to combine the expressivity of natural media with the flexibility of computer graphics. Furthermore, digital tools can make possible animated art forms that would be impossible with traditional media.
Benefits of non-photorealistic rendering include:
- Communication: Line art and cartoon illustration can efficiently convey the shape of a 3D surface; line art is often used for technical illustration, even when photographs are available.
- Expression: Cartoons and paintings have an expressive quality that allows an artist to convey mood and emotion; the universal qualities of cartoons allow viewers to immediately relate to the subject
- Aesthetics: Images created with traditional media can be beatiful, simply by the nature of the choices of stroke placement and the mixing of paint.
Research directions
Our work includes research in the following areas:
Painterly
rendering methods can process images and video to make them
look hand-painted.
Multiperspective Rendering images to be rendered
with non-linear perspective, freeing artists to combine images of
objects with different viewpoints.
Smooth surface
illustration creates pen-and-ink illustrations from 3D
models.
Image analogies
can automatically ``learn'' non-photorealistic rendering styles from
examples.
People
Papers
Image Analogies
A. Hertzmann, C. Jacobs, N. Oliver, B. Curless, D. Salesin.
SIGGRAPH 2001 Conference Proceedings.
Paint by Relaxation
A. Hertzmann.
Proc. CGI 2001: Computer Graphics International.
(Also NYU CS Technical Report 2000-801)
Algorithms for Rendering
in Artistic Styles
A. Hertzmann. Ph.D thesis. New York University. May, 2001.
Illustrating
smooth surfaces
A. Hertzmann, D. Zorin.
SIGGRAPH 2000 Conference
Proceedings. New Orleans, Louisiana. July 23-28, 2000. pp.
517-526.
Artistic
Multiperspective Rendering
M. Agrawala, D. Zorin, T. Munzner.
11th Eurographics Workshop
on Rendering. Brno, Czech Republic, 26-28 June 2000. pp.
125-136.
Painterly Rendering
for Video and Interaction
A. Hertzmann, K. Perlin.
NPAR 2000: First International
Symposium on Non-Photorealistic Animation andRendering.
Annecy, France. June 5-7, 2000. pp. 7-12.
Painterly Rendering with Curved Brush
Strokes of Multiple Sizes
A. Hertzmann.
SIGGRAPH 98 Conference Proceedings. pp.
453-460. Orlando, Florida. July, 1998.