imagine

v 1: form a mental image of something that is not present or that

is not the case; "Can you conceive of him as the

president?" [syn: {conceive of}, {ideate}, {envisage}]

2: expect, believe, or suppose; "I imagine she earned a lot of

money with her new novel"; "I thought to find her in a bad

state"; "he didn't think to find her in the kitchen" [syn:

{think}, {suppose}, {reckon}, {guess}]

image

1. Data representing a two-dimensional scene.

A digital image is composed of {pixels} arranged in a

rectangular array with a certain height and width. Each pixel

may consist of one or more {bit}s of information, representing

the brightness of the image at that point and possibly

including colour information encoded as {RGB} triples.

{Images} are usually taken from the real world via a {digital

camera}, {frame grabber}, or {scanner}; or they may be

generated by computer, e.g. by {ray tracing} software.

See also {image formats}, {image processing}.

(1994-10-21)

2. The image (or range) of a {function} is the

set of values obtained by applying the function to all

elements of its {domain}. So, if f : D -> C then the set f(D)

◦ \{ f(d) | d in D \} is the image of D under f. The image is

a subset of C, the {codomain}.

(2000-01-19)