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Multi-Target Tracking Using Windowed Fourier Single-Pixel Imaging.

Jinyu Zhang1, Taiyang Hu1, Xiaolang Shao1

  • 1School of Electronic Engineering and Optical Technology, Nanjing University of Science and Technology, Nanjing 210094, China.

Sensors (Basel, Switzerland)
|December 10, 2021
PubMed
Summary

This study introduces windowed Fourier single-pixel imaging (WFSI) for tracking multiple moving targets. The novel WFSI method achieves accurate multi-target tracking with low redundancy measurements.

Keywords:
fast moving object trackingmulti-target trackingsingle-pixel imagingwindowed Fourier transform

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Area of Science:

  • Optics and Photonics
  • Signal Processing
  • Computational Imaging

Background:

  • Single-pixel imaging (SPI) excels at high frame-rate target tracking.
  • Existing SPI techniques lack effective solutions for multi-target tracking.
  • Distinguishing closely positioned targets presents a significant challenge in tracking.

Purpose of the Study:

  • To propose and validate a novel multi-target tracking method using SPI.
  • To address the limitations of current SPI techniques in handling multiple targets.
  • To enhance the precision and capability of SPI for complex tracking scenarios.

Main Methods:

  • Development of a windowed Fourier single-pixel imaging (WFSI) technique.
  • Illumination of targets using a series of windowed Fourier basis patterns.
  • Implementation of 6K measurements and calculation of 2K windowed Fourier coefficients for K targets.
  • Introduction of a joint estimation approach to resolve ambiguities between nearby targets.

Main Results:

  • The proposed WFSI method enables tracking of K independently moving targets.
  • Achieved tracking accuracy of less than 2 pixels, verified by numerical simulation.
  • Demonstrated effective tracking performance through video experiments.
  • Successfully distinguished and tracked targets in close proximity using the joint estimation approach.

Conclusions:

  • WFSI offers a low-redundancy measurement strategy for multi-target tracking.
  • The joint estimation approach significantly enhances the method's capability in distinguishing targets.
  • This work presents the first effective approach for multi-target tracking using SPI technology.