Chapter 11

JPEG and MPEG2 Image Compression

The cost of data storage may have tumbled to a fraction of what it was even five years ago, and the Internet’s bandwidth is constantly increasing, but the requirement for storing and transmitting data in ever smaller packages remains. We now have effective audio data reduction technologies, but before that came data reduction and compression of images. JPEG compression for still images is the basis of MPEG, the moving picture equivalent. But before we try to understand image compression, it is probably a good idea to take a look at what an uncompressed image consists of. One way to do this is to think in terms of computer displayed images as it provides a simple starting point, although this is relevant ...

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