APPARATUS AND METHOD OF ESTIMATING CODE VOLUME, AS WELL AS DATA MEDIUM FOR IMPLEMENTING SAID METHOD

摘要

FIELD: information technology. ^ SUBSTANCE: disclosed is a method of determining code volume when coding quantised values of orthogonal transformation coefficients which are greater than the size of orthogonal transformation, assigned to a variable-length code chart. Quantised values are transformed to a one-dimensional type to obtain Serial-Value sets. Based on the proportion between the area of orthogonal transformation which corresponds to the size of orthogonal transformation assigned to the variable-length code chart, and the area of orthogonal transformation, the number of groups is calculated for the coding target object. The length of each Serial-Value set in each group is determined by accessing the variable-length code chart. The volume of the formed code is considered equal to the total length of the codes from all groups. ^ EFFECT: easy calculation when coding using a variable-length code. ^ 5 cl, 17 dwg