The Dictionary of Computer Graphics and Virtual Reality by Roy Latham

By Roy Latham

Superblack, superblock, supercase, superquadric, supersampling, superred, supergreen, and superblue are only a number of the phrases which make up the language of special effects. This new version of a greatly acclaimed dictionary presents a advisor to this fast-moving topic for either relative newcomers and pros operating within the box. the most adjustments were so as to add new terminology when it comes to digital truth and the comparable issues of robotics and networked simulation. This dictionary covers the software program, undefined, and purposes of special effects and comprises hundreds of thousands of phrases no longer came upon in different places. Definitions are transparent and concise, with unique cognizance given to exchange spellings and meanings. Acronyms are decoded, and pronunciation of the doubtless unpronounceable is given, from WYSIWYG (whizzy-wig) to NAPLPS (nap-lips).

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CTF : Contrast Threshold Function; the minimum perceptible contrast for a specific observer of a display, as a function of spatial frequency. CT scanner: Computed Tomography scanner; a device producing data for medical imaging using a low-intensity X-ray source and an array of typically more than 700 detectors. By rotating the source and detector array the system can compute a cross-sectional image of the subject. cuberille adj. : Of or related to a model used for the visualization of three-dimensional data in which space is subdivided into equal-sized rectangular volumes, and, for rendering, polygonal faces are constructed for selected volumes depending upon the data values in each volume.

Digitizer n. : A graphics input device comprising a drawing-board-like instrumented flat surface and a movable puck having a cursor, for entering the coordinates of points off drawings by selecting them with the puck. A similar device using a stylus instead of a puck is called a data tablet (or tablet), although sometimes the various terms are used interchangeably. Three-dimensional digitizers typically use a stylus to select points within a prescribed volume. dingbat n. : In typography, a nonalphanumeric symbol of a size similar to a letter or number, such as a small circle, pointing hand, square, or arrow.

DataSuit n. : VPL Research pioneering brand of bodysuit. 34 data tablet • decoder 35 data tablet: DIGITIZER: TABLET. data visualization n. : Process by which engineering, scientific, financial, or other data are represented as a graphics image, usually as a perspective image and often presented interactively from varying viewpoints. DCT \D-C-T\ : Discrete Cosine Transform; the mathematical basis of widely used image compression algorithms in which blocks of pixels are characterized by spatial frequencies.

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