An image (from Latin: imago) is an object that depicts visual perception, such as:

  • a photograph
  • or other two-dimensional picture,


There are two way (types) of representing an image:

Type Description
Raster graphics (also called bitmap) dot matrix data structure. The image is defined in terms of rows and columns of individual pixels, each with its own color.
Vector graphics geometrical primitives such as points, lines, curves. For instance, a single straight line is described in terms of its two end points.





The difference in these types of graphic images becomes readily apparent when a drawing is enlarged.

Most output devices display graphics as a raster or bitmap image. The real difference between drawing with bitmap graphics and vector graphics is the point at which the image is converted into a bitmap.

In the case of vector graphics, this conversion is done at the very last step before display, ensuring that the final image matches exactly the resolution of the output device.


See primitive that convert a raster image to a vector one


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