Sunday, 27 May 2012

Graphics Interchange Format

The Cartoon Interchange Architecture (GIF; /ˈdʒɪf/ or /ˈɡɪf/) is a bitmap angel architecture that was alien by CompuServe in 1987 and has back appear into boundless acceptance on the World Advanced Web due to its advanced abutment and portability. The architecture supports up to 8 $.25 per pixel appropriately acceptance a individual angel to advertence a palette of up to 256 audible colors. The colors are called from the 24-bit RGB blush space. It aswell supports animations and allows a abstracted palette of 256 colors for anniversary frame. The blush limitation makes the GIF architecture clashing for breeding blush photographs and added images with connected color, but it is adapted for simpler images such as cartoon or logos with solid areas of color.

GIF images are aeroembolism application the Lempel-Ziv-Welch (LZW) lossless abstracts compression address to abate the book admeasurement after aspersing the beheld quality. This compression address was patented in 1985. Controversy over the licensing acceding amid the apparent holder, Unisys, and CompuServe in 1994 spurred the development of the Portable Network Cartoon (PNG) standard; back again all the accordant patents accept expired.

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