TY - GEN
T1 - Phase-based accelerated motion magnification using image pyramid
AU - Mizokami, Tomohito
AU - Sugimoto, Kenjiro
AU - Kamata, Sei Ichiro
N1 - Funding Information:
ACKNOWLEDGMENT The authors would like to acknowledge the Grants-in-Aid for Scientific Research for funding.
Publisher Copyright:
© 2021 IEEE.
PY - 2021
Y1 - 2021
N2 - This paper proposes a method for motion magnification that accelerates phase extraction using a Complex Steerable Pyramid (CSP). Motion magnification is a task to visualize minute fluctuations in a video that are difficult for humans to perceive. The conventional method amplifies the phase change of the CSP between frames in a video to emphasize the small fluctuations. These responses are calculated by the product of the transfer function of the complex steerable filters and the frequency components of each frame. However, the fast Fourier transform and its inverse transform required for this computation occupies about 30 % of the computation time, and is a computational bottleneck. We have accelerated the conventional method by generating the CSP by convolution in the spatial domain focusing on the hierarchical structure of image pyramids.
AB - This paper proposes a method for motion magnification that accelerates phase extraction using a Complex Steerable Pyramid (CSP). Motion magnification is a task to visualize minute fluctuations in a video that are difficult for humans to perceive. The conventional method amplifies the phase change of the CSP between frames in a video to emphasize the small fluctuations. These responses are calculated by the product of the transfer function of the complex steerable filters and the frequency components of each frame. However, the fast Fourier transform and its inverse transform required for this computation occupies about 30 % of the computation time, and is a computational bottleneck. We have accelerated the conventional method by generating the CSP by convolution in the spatial domain focusing on the hierarchical structure of image pyramids.
KW - Gaussian filter
KW - complex steerable pyramid
KW - motion magnification
UR - http://www.scopus.com/inward/record.url?scp=85125965529&partnerID=8YFLogxK
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U2 - 10.1109/TENCON54134.2021.9707375
DO - 10.1109/TENCON54134.2021.9707375
M3 - Conference contribution
AN - SCOPUS:85125965529
T3 - IEEE Region 10 Annual International Conference, Proceedings/TENCON
SP - 708
EP - 713
BT - TENCON 2021 - 2021 IEEE Region 10 Conference
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2021 IEEE Region 10 Conference, TENCON 2021
Y2 - 7 December 2021 through 10 December 2021
ER -