An investigation on the relationship between distortions in the motion magnified videos, and the choice of filter bank
An investigation on the relationship between distortions in the motion magnified videos, and the choice of filter bank
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运动放大视频失真与滤波器组选择关系的研究
DOI：
10.1117/12.2515538
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发表时间：
2019
期刊：
影响因子：
--
通讯作者：
Mao, Zhu
中科院分区：
文献类型：
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作者：
Sarrafi, Aral;Mao, Zhu
基于相位的运动放大是计算机视觉和计算摄影的最新进展之一，它为结构动力学识别引入了新的方法。在运动放大视频中经常出现不必要的伪影和失真，这些伪影和失真可以追溯到操纵相位变化后的重建过程。在本文中，我们对这一现象进行了更深入的研究，以找出失真与滤波器组的选择和放大系数之间的关系。研究表明，傅里叶变换可以重建运动放大帧而不产生任何畸变，而另一方面，使用其他滤波器组如Gabor小波将产生具有畸变的运动放大帧。还简要讨论了这些扭曲的来源。
Phase-based motion magnification is one the most recent advances in computer vision and computational photography that has introduced new approaches for structural dynamics identification. Unwanted artifacts and distortions are often present in the motion-magnified videos that can be traced back to the reconstruction procedure after manipulating the phase variations. Within this article, we have studied this phenomenon more closely to find out the relations between the distortions and the choice of filter bank, and the magnification factor. It has been shown that Fourier transformation can reconstruct motion-magnified frames without inducing any distortions, and on the other hand using other filter banks such as Gabor wavelets will generate motion-magnified frames that have distortions in them. The source of these distortions are also discussed briefly.
使用图像序列和时空上下文学习进行长期结构位移监测
DOI：
--
发表时间：
2017
期刊：
影响因子：
--
作者：
C. Dong;O. Celik;F. Catbas
通讯作者：
F. Catbas
DOI：
--
发表时间：
2019
期刊：
Conference Proceedings of the Society for Experimental Mechanics Series
影响因子：
--
作者：
Aral Sarrafi;Zhu Mao
通讯作者：
Zhu Mao
应用视频放大对风力涡轮机叶片横截面进行基于视觉的操作偏转形状评估
DOI：
--
发表时间：
2018
期刊：
Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring
影响因子：
--
作者：
Aral Sarrafi;P. Poozesh;C. Niezrecki;Zhu Mao
通讯作者：
Zhu Mao