Image

From Wikipedia, the free encyclopedia

Look up image in
Wiktionary, the free dictionary.

"Pictures" redirects here. For music with a similar name, see Picture (disambiguation).

For movies, see Film. For other uses of "Image" or "Images", see Image (disambiguation).

For image policy on Wikipedia, see Wikipedia:Images.

Definition of image and imagery, from Thomas Blount's Glossographia Anglicana Nova, 1707.

The top image is captured using photography. The bottom image is rendered. Images are produced either by capturing or rendering.

In common usage, an image (from Latin imago) or picture is an artifact, usually two-dimensional, that has a similar appearance to some subject—usually a physical object or a person.

Images may be two-dimensional, such as a photograph, screen display, and as well as a three-dimensional, such as a statue. They may be captured by optical devices—such as 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 such as a map, a graph, a pie chart, or an abstract painting. In this wider sense, images can also be rendered manually, such as by drawing, painting, carving, rendered automatically by printing or computer graphics technology, or developed by a combination of methods, 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 a camera obscura, 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 an individual'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 acoustic technologies and the creation of sound art have led to a consideration of the possibilities of a sound-image made up of irreducible phonic substance beyond linguistic or musicological analysis.

A collection of non-volatile images providing an image changing with time is a film.

[edit] See also

Real image, an image formed by rays of light that cross at the image
Virtual image, an image formed by rays that do not cross at the image

[edit] References

This article does not cite any references or sources. (April 2007)
Please help improve this article by adding citations to reliable sources. Unverifiable material may be challenged and removed.