Image
An
image (from
Latin imago) or
picture is a visual reproduction of an object or a person, either by using
optics (using a
camera,
mirror,
refraction,
telescope,
microscope, etc.), or by
artistic methods such as
drawing or
painting.
See also:
In
computer science,
image can be used in :
- Disk image: a CR-ROM ISO image or floppy image. Itīs a file that contains sector by sector what is in a CD-ROM or floppy.
- Executable image: A structured file containing machine instructions and data. This file can be loaded into a process's virtual memory and executed. See kernel (computers) image.
In
mathematics, an
image is a value or set of values of a
function.
Specifically, let
f be a function from the
set X to the set
Y.
If
a is an element of
X, then its image under
f is the value
f(
a).
If
A is a
subset of
X, then its image under
f is defined to be
f(
A) := {
f(
a) :
a in
A}.
Finally, the image of
f itself is
f(
X), the same as the
range of
f.
In
religion, an
image is an
idol or
icon.
In
philosophy, an
image is a
conception or
idea.
In
Comics,
Image is a publisher of such characters as Spawn. See
Image Comics.