A Study of Objective Picture Quality Evaluation for Coded Pictures : Evaluation for Coded Still Pictures

Abstract

An objective picture quality scale for coded still pictures is studied. A scale is derived from two types of weighted root-mean-square-errors, those in flat areas and non-flat areas. Error types were taken from an error picture which is determined by a subtraction of the coded picture from the original. The scale values show a good linear correlation with perceived subjective picture quality.