Video Folding: Increased Framerate for Semi-Repetitive Sequences
Video Folding: Increased Framerate for Semi-Repetitive Sequences
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DOI：
10.1109/tvcg.2020.2992670
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发表时间：
2020-05
影响因子：
5.2
通讯作者：
Chris May;Manuel M. Oliveira;Daniel G. Aliaga
中科院分区：
文献类型：
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作者：
Chris May;Manuel M. Oliveira;Daniel G. Aliaga
我们引入一种技术来综合地增加半重复视频的帧率（即，重复但不以相同方式的运动视频）以帮助可视化。通过重新排序和组合来自所有重复的帧，我们产生具有高得多的时间分辨率的单个非重复序列。然后，我们使用一种新的帧扭曲技术的基础上，一个密集的校正流，以抵消重复之间的差异。生成的视频保持运动的平滑度，还允许无缝、无限的循环。我们证明了所提出的解决方案的有效性，定量地，通过测量现有方法的改进，和定性地，通过执行用户评估，并在文章和随附的视频中提供几个例子。
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.