Imperial College London
Dr Panagiota (Tania) Stathaki

Dr Panagiota (Tania) Stathaki

Faculty of Engineering, Department of Electrical and Electronic Engineering

Reader in Signal Processing
 
 
 
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Contact

 

+44 (0)20 7594 6229t.stathaki Website

 
 
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Assistant

 

Miss Vanessa Rodriguez-Gonzalez +44 (0)20 7594 6267

 
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Location

 

812Electrical EngineeringSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Konstantinidis:2019:10.1109/tip.2019.2894266,
author = {Konstantinidis, D and Stathaki, T and Argyriou, V},
doi = {10.1109/tip.2019.2894266},
journal = {IEEE Transactions on Image Processing},
pages = {3089--3101},
title = {Phase amplified correlation for improved sub-pixel motion estimation},
url = {http://dx.doi.org/10.1109/tip.2019.2894266},
volume = {28},
year = {2019}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Phase correlation (PC) is widely employed by several sub-pixel motion estimation techniques in an attempt to accurately and robustly detect the displacement between two images. To achieve sub-pixel accuracy, these techniques employ interpolation methods and function-fitting approaches on the cross-correlation function derived from the PC core. However, such motion estimation techniques still present a lower bound of accuracy that cannot be overcome. To allow room for further improvements, we propose in this paper the enhancement of the sub-pixel accuracy of motion estimation techniques by employing a completely different approach: the concept of motion magnification. To this end, we propose the novel phase amplified correlation (PAC) that integrates motion magnification between two compared images inside the phase correlation part of frequencybased motion estimation algorithms and thus directly substitutes the PC core. The experimentation on magnetic resonance (MR) images and real video sequences demonstrates the ability of the proposed PAC core to make subtle motions highly distinguishable and improve the sub-pixel accuracy of frequency-based motion estimation techniques.
AU  - Konstantinidis,D
AU  - Stathaki,T
AU  - Argyriou,V
DO  - 10.1109/tip.2019.2894266
EP  - 3101
PY  - 2019///
SN  - 1057-7149
SP  - 3089
TI  - Phase amplified correlation for improved sub-pixel motion estimation
T2  - IEEE Transactions on Image Processing
UR  - http://dx.doi.org/10.1109/tip.2019.2894266
UR  - https://ieeexplore.ieee.org/document/8624546
UR  - http://hdl.handle.net/10044/1/67247
VL  - 28
ER  -
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