An investigation on the relationship between distortions in the motion magnified videos, and the choice of filter bank

Aral Sarrafi; Zhu Mao

doi:10.1117/12.2515538

27 March 2019 An investigation on the relationship between distortions in the motion magnified videos, and the choice of filter bank

Aral Sarrafi, Zhu Mao

Author Affiliations +

Proceedings Volume 10970, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2019; 1097005 (2019) https://doi.org/10.1117/12.2515538
Event: SPIE Smart Structures + Nondestructive Evaluation, 2019, Denver, Colorado, United States

Abstract

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.

Citation Download Citation

Aral Sarrafi and Zhu Mao "An investigation on the relationship between distortions in the motion magnified videos, and the choice of filter bank", Proc. SPIE 10970, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2019, 1097005 (27 March 2019); https://doi.org/10.1117/12.2515538

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