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RenderMan interface

A photorealistic image programming interface from Pixar Animation Studios, Inc., Emeryville, CA ( It provides the interface from modeling programs to RenderMan-compliant rendering software, such as Pixar's own suite of artist's tools for Unix, Windows and Mac. Co-founded in 1986 by Steve Jobs, Pixar and Disney together are world renowned for their award-winning animation in movies such as "Toy Story," "A Bug's Life" and "Monsters, Inc."

Teapots Updated!
The shadows on this teapot pile were created in Renderman. Years ago, one of the first examples of computer graphics techniques was a teapot created by the University of Utah (see anti-aliasing). (Image courtesy of Pixar Animation Studios.)


(1) Smoothing the jagged appearance of diagonal lines in a bitmapped image. The pixels that surround the edges of the line are changed to varying shades of gray or color in order to blend the sharp edge into the background. This technique is also called "dithering," but is usually known as anti-aliasing when applied to diagonal and curved lines.

(2) Smoothing a distorted signal by applying various techniques that add data or filter out unwanted noise.

This teapot from the University of Utah was a famous first example of anti-aliasing applied to images. (Images courtesy of Computer Sciences Department, University of Utah.)

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