METHOD OF ESTIMATING DISTORTION LEVEL ASSOCIATED WITH ENCODING MODE, SYSTEM FOR CALCULATING RATE DISTORTION COST OF ENCODING MODE, AND MODULE FOR ESTIMATING RESIDUE OF ESTIMATED SPACE DOMAIN OF ENCODING MODE USING TRANSFORM DOMAIN

摘要

PROBLEM TO BE SOLVED: To provide distortion cost estimation of transform domain base associated with an encoding mode of a particular macroblock.;SOLUTION: Transform-based distortion cost estimation is described, which can be used to calculate a rate distortion cost associated with a mode for encoding a macroblock. A distortion value of a particular mode is estimated within the transform domain, thereby allowing eliminating both inverse transformation and inverse motion functions based on this calculation. A spatial domain residue of an encoding mode is estimated within the transform domain by identifying a difference between a prediction residue after motion compensation of the macroblock and its corresponding signal after reconstruction. The estimated spatial domain may be subsequently used for distortion matrix calculation to estimate a distortion level of an encoding mode within the transform domain.;COPYRIGHT: (C)2007,JPO&INPIT