Video memorability is a measure of how likely a particular video is to be remembered by a viewer when that viewer has no emotional connection with the video content. It is an important characteristic as videos that are more memorable are more likely to be shared, viewed, and discussed. This paper presents results of a series of experiments where we improved the memorability of a video by selectively cropping frames based on image saliency. We present results of a basic fixed cropping as well as the results from dynamic cropping where both the size of the crop and the position of the crop within the frame, move as the video is played and saliency is tracked. Our results indicate that especially for videos of low initial memorability, the memorability score can be improved.
翻译:视频可记忆性衡量的是观众在无情感关联的情况下,对特定视频内容的记忆可能性。作为视频的重要特性,更高可记忆性的内容更易被分享、观看和讨论。本文通过一系列实验,展示基于图像显著性的选择性帧裁剪方法对视频可记忆性的提升效果。我们分别呈现了固定裁剪与动态裁剪的实验结果——后者在视频播放过程中,通过追踪显著性变化,使裁剪框的尺寸和位置随帧动态调整。实验结果表明,尤其对于初始可记忆性较低的视频,该方法能有效提升其可记忆性评分。