image file

An image file is a file that stores a digital image. The content of the file has either been digitally computed (see computed image), or digitized by analog-to-digital conversion and can therefore neither directly be recognized by the human viewer as an image nor read as text (see text file)

For visualization, a device is required, which converts the content back into analog data (so-called digital-to-analog conversion); such a device is the computer that can visualize the image on the monitor using image viewing software.

Basically, a raster graphic is composed of image points (pixels) and a vector graphic, which is described with graphical primitives. Various graphic formats are also used to store the image files, for example JPEG, GIF, PNG, TIF or the raw data format (RAW format) for raster graphics or WMF, EPS, CDR or SVG for vector graphics. Image files of a digital camera are always raster graphics. Edit source text

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