Fast 2D Subpixel Displacement Estimation

Fast and simple methods for motion estimation with subpixel accuracy are of interest in a variety of applications. In this paper, we extend a recently proposed method for quantifying 1D displacements with subpixel accuracy, referred to as the subtraction method (SM) to 2D motion. Simulation and expe...

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Bibliographic Details
Published in:Photonics
Main Authors: Min Wan, John J. Healy, John T. Sheridan
Format: Article
Language:English
Published: MDPI AG 2024-06-01
Subjects:
displacement measurement
motion estimation
correlation
subtraction method
Online Access:https://www.mdpi.com/2304-6732/11/7/625
Description
Summary:Fast and simple methods for motion estimation with subpixel accuracy are of interest in a variety of applications. In this paper, we extend a recently proposed method for quantifying 1D displacements with subpixel accuracy, referred to as the subtraction method (SM) to 2D motion. Simulation and experimental results are presented. The results indicate that any general motion in 2D involving combinations of in-plane motions in x and y can be determined using SM after a 1D calibration. The errors between the actual motion and estimated are examined.
ISSN:2304-6732

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