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Index Color

Reduced color mapping, 8 bit or less. Done to reduce graphics to their smallest size.

Image

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 color information encoded as RGB triples.

Image Formats

There are many formats used to store images in files. GIF and JPEG are the most commonly used image formats for Web and multimedia images. EPS and TIFF are formats used for graphics to be printed in brochures, posters, business cards, etc. Other formats include BIFF, BMP, IFF, NFF, OFF, PCX, PICT, PNG, TGA, XBM.