1. <data, graphics> Data representing a two-dimensional scene. A digital image is composed of pixels arranged in a rectangular array with a certain height and width. Each pixel may consist of one or more bits of information, representing the brightness of the image at that point and possibly including colour information encoded as RGB triples.
2. <mathematics> The image (or range) of a function is the set of values obtained by applying the function to all elements of its domain. So, if f : D -> C then the set f(D) = \ f(d) | d in D \ is the image of D under f. The image is a subset of C, the codomain.