Introduction on Video Compression
Image and video data compression has been found to be necessary in several important applications such as visual transmission and storage. This is because, the
huge amount of data involved in these and other applications, usually very much exceeds the capability of existing hardware although the technologies in related
industries are growing up. Data representing information carried and the quantity of data exactly can be
measured. In the context of digital image and video, data are usually measured by the number of binary units or bits. The bit rate which also known as the coding rate, is an
important parameter in image and video compression and is frequently expressed in a unit of bits per pixel bpp. The term pixel is an abbreviation for picture element as is
sometimes referred to as pel. In information source coding, the bit rate is sometimes expressed in a unit of bits per symbol.