A new metric for judder in high frame-rate video

Abstract

Recent advances on high frame-rate (HFR) hold-type display systems have resulted in the increased demands for HFR contents. Frame-rate up conversion (FRUC) technique could be used for creating HFR contents from the existing low frame-rate (LFR) contents. However, the judder artifacts caused by FRUC would degrade the quality of HFR. The aim of this work is to analyze the cause of judder in the reconstructed HFR video from FRUC, and to propose a new metric to evaluate judder. A judder measurement method using subjective assessments is presented. As the prior study defines judder as the differences between the natural motion and result from the sampled motion of video, the proposed metric quantifies the judder by measuring the differences in retinal space. Experimental results demonstrate that the proposed judder determination method is consistent with the subjective assessment results.