Introduction - If you have any usage issues, please Google them yourself
In order to study the distortion of the recovery information defining the source symbol rate necessary, referred to rate distortion theory. Issued after the source symbols spread sink, generally can not be completely intact, but will produce distortion. To avoid this distortion is almost impossible, but also not necessary, because the sink whether human or machine, the sensitivity is always limited, and can not perceive the infinite slight distortion. If allowed to a certain limit distortion when dealing with source symbols, can reduce the rate necessary information, help transport and storage. Rate-distortion theory is used to calculate the different types of sources in a variety of distortion limits required minimum information rate. Thus, this theory is the foundation of modern information processing problem