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J.M. Ogden | E.H. Adelson | J R. Bergen | P.J. Burt Pyramid-based computer graphics

Summary: J.M. Ogden | E.H. Adelson | J R. Bergen | P.J. Burt
Pyramid-based computer graphics
Pyramid-based graphics techniques can provide realistic
computer graphics on small systems without the complexities
of physics simulations.
Human beings have an intuitive feel for graphics. Graphics
problems such as blending two images smoothly, interpolating
to fill in missing image data, or creating realistic looking images
are routinely solved by artists using traditional media. It is
much more difficult to perform these tasks mathematically. A
major step in solving a computer graphics problem is choosing
an appropriate numerical representation for the image, one
which allows us to use our visual and artistic intuition in a
natural way.
Artists often tend to separate the spatial scales of an image
when creating or altering a picture. When an artist paints a
landscape, the coarse scale (low spatial frequency) information
is filled in first, as a wash of color in a large region. Inter-
mediate-size details can be added next with a medium-size
brush. As a last step, the artist draws the fine details with a


Source: Adelson, Edward - Computer Science and Artificial Intelligence Laboratory, Department of Brain and Cognitive Science, Massachusetts Institute of Technology (MIT)


Collections: Biology and Medicine