Joint Photographic Experts Group - JPEG
Joint Photographic Experts Group - JPEG is a working committee under the auspices of the International Standards Organization - ISO with the goal of defining a standard for digital compression and decompression of still images for use in computer systems. The JPEG committee has produced an image compression standard format that is able to reduce the bit per pixel ratio to approximately 0.25 bits per pixel for fair quality to 2.5 bits per pixel for high quality. JPEG uses lossy compression methods that result in some loss of the original data. When you decompress the original image, you don't get exactly the same image that you started with, although JPEG was specifically designed to discard information not easily detected by the human eye.