First time Assignment 1-6

1-6 How is the data compression technology classified?

A : generally divided into reversible compression and irreversible compression: modeling expression---two quantization----Entropy coding (1) to establish a mathematical model, so as to be more compact or more effectively "re-express" the regularity is less obvious (or not so prominent) of the original data; (2) Try to express more succinctly the model parameters (or new data representations) obtained from modeling the original data using the model. Since these parameters may have an infinite (or too high) representation precision, they can be quantified as a finite precision-a quantization process that differs from digitizing the original signal, so called two quantization, and (3) The quantization of the model parameters or the distribution of the message flow in order to obtain the most compact stream of compressed code. At this time the coding requirements can "faithfully" reproduce the model parameters of the quantization symbol, so called "entropy coding."

First time Assignment 1-6