METHOD AND APPARATUS OF ENTROPY ENCODING/DECODING AND SYMBOL ENDCODING/DECODING METHOD AND APPARATUS THEREFOR

摘要

PURPOSE: An entropy encoding/decoding method for processing an image of a layered structure and a device thereof, and a symbol encoding/decoding method and a device thereof are provided to perform the four symbols encoding at once, thereby increasing the coding gain. CONSTITUTION: A reordering unit reorders the coefficients of an input residual image(601). A low frequency component and a high frequency component are separated for the efficient entropy coding through the reordering. A symbol encoder and a level encoder perform the symbol encoding and the level encoding of the coefficients at least two symbol units at the same time(603).