Bitmap Graphic
:
A bitmap graphic, is a data file or structure representing a
generally rectangular grid of pixels, or points of color, on a
computer monitor, paper, or other display device. The color of
each pixel is individually defined; images in the RGB color
space, for instance, often consist of colored pixels defined by
three bytesone byte each for red, green and blue. Less colorful
images require less information per pixel; an image with only
black and white pixels requires only a single bit for each pixel.
Raster graphics are distinguished from vector graphics in that
vector graphics represent an image through the use of geometric
objects such as curves and polygons.
Source: http://en.wikipedia.org/wiki/Bitmap_graphics
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