What is Image

An image is an artifact, for example a two-dimensional picture, that has a similar appearance to some subject—usually a physical object or a person.

Characteristics

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 hard copy, is one that has been recorded on a material object, such as paper or textile by photography or digital processes.

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.

Still image

A still image is a single static image, as distinguished from a moving image (see below). This phrase is used in photography, visual media and the computer industry to emphasize that one is not talking about movies, or in very precise or pedantic technical writing such as a standard.

A film still is a photograph taken on the set of a movie or television program during production, used for promotional purposes.

Moving image

A moving image is typically a movie (film), or video, including digital video. It could also be an animated display such as a zoetrope.

Definiton of Image

–noun

1.	a physical likeness or representation of a person, animal, or thing, photographed, painted, sculptured, or otherwise made visible.

2.	an optical counterpart or appearance of an object, as is produced by reflection from a mirror, refraction by a lens, or the passage of luminous rays through a small aperture and their reception on a surface.

3.	a mental representation; idea; conception.

4.	Psychology. a mental representation of something previously perceived, in the absence of the original stimulus.

5.	form; appearance; semblance: We are all created in God's image.

6.	counterpart; copy: That child is the image of his mother.

7.	a symbol; emblem.

8.	the general or public perception of a company, public figure, etc., esp. as achieved by careful calculation aimed at creating widespread goodwill.

9.	a type; embodiment: Red-faced and angry, he was the image of frustration.

10.	a description of something in speech or writing: Keats created some of the most beautiful images in the language.

11.	Rhetoric. a figure of speech, esp. a metaphor or a simile.

12.	an idol or representation of a deity: They knelt down before graven images.

13.	Mathematics. the point or set of points in the range corresponding to a designated point in the domain of a given function.

14.	Archaic. an illusion or apparition.

–verb (used with object)

15.	to picture or represent in the mind; imagine; conceive.

16.	to make an image of; portray in sculpture, painting, etc.

17.	to project (photographs, film, etc.) on a surface: Familiar scenes were imaged on the screen.

18.	to reflect the likeness of; mirror.

19.	to set forth in speech or writing; describe.

20.	to symbolize; typify.

21.	to resemble.

22.	Informal. to create an image for (a company, public figure, etc.): The candidate had to be imaged before being put on the campaign trail.

23.	to transform (data) into an exact replica in a different form, as changing digital data to pixels for display on a CRT or representing a medical scan of a body part in digital form.

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