We introduce a technique to synthetically increase the framerate of semi-repetitive videos (i.e., videos of motion that repeats but not in an identical fashion) to aid in visualization. By reordering and combining frames from all repetitions, we produce a single non-repetitive sequence with much higher temporal resolution. Then, we use a novel frame warping technique based on a dense corrective flow to counteract differences between repetitions. The resulting video maintains smoothness of motion and additionally allows for seamless, infinite looping. We demonstrate the effectiveness of the proposed solution both quantitatively, by measuring the improvement over existing methods, and qualitatively, by performing a user evaluation and providing several examples in the article and accompanying video.

中文翻译：

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视频折叠：提高半重复序列的帧率

我们引入了一种技术来综合提高半重复视频（即重复但不以相同方式的运动视频）的帧率，以帮助可视化。通过重新排序和组合来自所有重复的帧，我们产生了具有更高时间分辨率的单个非重复序列。然后，我们使用一种基于密集校正流的新型帧扭曲技术来抵消重复之间的差异。生成的视频保持了运动的流畅性，另外还允许无缝、无限循环。我们通过衡量对现有方法的改进定量地证明了所提出的解决方案的有效性，并通过执行用户评估并在文章和随附的视频中提供了几个示例来定性地证明了所提出的解决方案的有效性。