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:''"Pictures" redirects here. For movies, see ]. For other uses of Image, see ].''
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In common usage, an '''image''' (from ] ''imago'') or '''picture''' is an artifact that reproduces the likeness of some ]&mdash;usually a physical object or a ].

Images may be two ]al, such as a ], or three dimensional such as in a ]. They are typically produced by ] devices&mdash;such as a ]s, ]s, ], ]s, ]s, etc. and natural objects and phenomena, such as the human ] or water surfaces.

The word ''image'' is also used in the broader sense of any two-dimensional figure or ], such as a ], a ], a ], or an ]. In this wider sense, images can also be produced manually, such as by ], ], ], by ] technology, or a combination of the two, especially in a ].

A volatile image is one that exists only for a short period of time. This may be a reflection of an object by a ], a ] of the ] on a wall by a ], or a scene displayed on a ]. A fixed image, also called a hardcopy, is one that has been recorded on a material object, such as ] or ].

A ] exists in someone's mind: something one remembers or imagines. The subject of an image need not be real; it may be an abstract concept, such as a ], function, or "imaginary" entity.
For example, ] claimed to have dreamt purely in aural-images of dialogues. The development of synthetic acousitic technologies and the creation of ] have led to a consideration of the possibilities of a ] comprosided of irriducible phonic substance beyond linguistic or musicological analysis.

==Specialized meanings==
The word also has many specialized meanings in various disciplines and contexts:
* In ], a ] can produce a ] or a ].
* In many other ] and ] contexts, image usually means a two-dimensional ]&mdash;a physical phenomenon that can be modeled as a ] from a two-dimensional ''domain'' (such as the ] or a ]) to some set of values, usually real numbers or vectors. This sense covers not only ]s but also ] ones, such as ]s. See ].
* In ] and ], image almost always means ] or, by extension, any computer description of an image, e.g. a ], an ], or a ] model.
* In ], image can mean an exact (bit-by-bit) copy of the contents of some device, such as a ], ], or ]. In particular:
** A core image (or ], from ], the predominant RAM technology of the 1960s) is a faithful copy of the data stored in the ] of a ] or ].
** An executable image is a structured file containing machine instructions and data, which can be loaded into a process's ] and executed by the computer's ].
** A ROM image is a copy of the contents of an entire ] chip. Many video games are functionally ROM, so a common usage of ROM images is to store games on other medium for use by ]s.
* In ], the ] consists of its output values.
* In ], the image is a coefficient (]) that bridges a stock's fundamental value and its ].
* In ], a ] is a man-made representation of a deity that is venerated, often associated with ].
* In ], an image is an outward representation, similar to the ].
* In ], brand image is the perception that consumers have for a ] in what values and benefits it offers.

==See also==

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* ]
* ]
* ]
* ]
* ]
* ]

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Revision as of 18:35, 15 November 2006

"Pictures" redirects here. For movies, see Film. For other uses of Image, see Image (disambiguation).
For image policy on Misplaced Pages, see Misplaced Pages:Images.

In common usage, an image (from Latin imago) or picture is an artifact that reproduces the likeness of some subject—usually a physical object or a person.

Images may be two dimensional, such as a photograph, or three dimensional such as in a statue. They are typically produced by optical devices—such as a cameras, mirrors, lenses, telescopes, microscopes, etc. and natural objects and phenomena, such as the human eye or water surfaces.

The word image is also used in the broader sense of any two-dimensional figure or illustration, such as a map, a graph, a pie chart, or an abstract painting. In this wider sense, images can also be produced manually, such as by drawing, painting, carving, by computer graphics technology, or a combination of the two, especially in a pseudo-photograph.

A volatile image is one that exists only for a short period of time. This may be a reflection of an object by a mirror, a projection of the sun on a wall by a pinhole camera, or a scene displayed on a cathode ray tube. A fixed image, also called a hardcopy, is one that has been recorded on a material object, such as paper or textile.

A mental image exists in someone's mind: something one remembers or imagines. The subject of an image need not be real; it may be an abstract concept, such as a graph, function, or "imaginary" entity. For example, Sigmund Freud claimed to have dreamt purely in aural-images of dialogues. The development of synthetic acousitic technologies and the creation of sound art have led to a consideration of the possibilities of a sound-image comprosided of irriducible phonic substance beyond linguistic or musicological analysis.

Specialized meanings

The word also has many specialized meanings in various disciplines and contexts:

See also

Categories: