Impression Evaluation of Thumbnails Produced by “Choco-Para” based on Emphasized Speech Extraction

Abstract

This paper describes an impression evaluation of the CGV (Consumer Generated Video) still / video thumbnails. Our proposal, Choco-Para, automatically extracts emphasized speech portions to create skimmed content. Since audiences generally access to the original video after watching a still/video thumbnail on CGV sharing sites, his / her impressions of the thumbnail are very important. We conduct subjective evaluations using the SD scaling method and factor analysis. The results show that, compared to the center frame / portion selection approach, the video thumbnails output by Choco-Para create positive impressions.