Study on Objective Evaluation for Generated Artifacts by Motion Compensated Standards Converters

Abstract

Converted picture quality by a motion-copensated standards conversion depends on the performance of the motion vector estimation from TV signals. The performance of this motion vector estimation from TV signals in turn depends on the characteristics of input pictures. Therefore, subjective evaluation using several test sequences is important to evaluate the performance of a standards converter, and objective evaluation using general broadcasting programs is important, too. This paper proposes a measure for objective evaluation of artifacts which are generated by motion-compensated standards conversion. The proposed measure for objective evaluation is analyzed, and some converted pictures which are obtained by computer simulation of standards conversion are evaluated using this measure. The relationship between the measure and the artifacts of the converted pictures is considered. We confirm that the proposed measure can roughly represent artifacts in the converted pictures.