ATI Technologies X1550 SERIES manual Pulldown, 3Dc

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CHAPTER 9:

Glossary

2D

Acronym for “two dimensional,” a term applied to computer graphics that are “flat.” Typical desktop applications such as word processors, spreadsheet programs, or other programs that manipulate print or simple graphics (such as pictures or line art) are generally considered to be operating within a 2D environment, even when they include simple three dimensional elements, such as buttons.

Pulldown

Pulldown is a telecine technique used to transfer motion picture film shot at one frame rate to a video format at a different frame rate. Typical NTSC video contains more frames per second than motion picture film for even division between frames, so that every 4 frames of film can be reproduced as 5 separate NTSC frames, the “extra frame” created by interlacing interpolated frames. The features produces a smoother NTSC video image from a motion picture film source, and can be used for better edge image processing in the Vector Adaptive Deinterlacing feature within Catalyst™ Control Center.

3D

Acronym for “three dimensional,” referring to computer graphics that appear to have volume and depth. Various modeling processes take the representation of a three dimensional object provided by the computer program and render it by using various lighting components, applying textures, and setting layers of transparency or opacity as required in order to produce a realistic representation of a three-dimensional object on a two- dimensional display.

3Dc™

An ATI hardware-based compression technology that reduces the size of 3D texture data, rendering more finely-grained texture surfaces with greater efficiency. It significantly minimizes the memory footprint of normal maps containing information on how light reflects off textured