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Low-Cost Hyperspectral Imaging with A Smartphone.

Mary B Stuart1, Andrew J S McGonigle2, Matthew Davies1

  • 1Department of Electronic and Electrical Engineering, University of Sheffield, Sheffield S1 4DE, UK.

Journal of Imaging
|August 30, 2021
PubMed
Summary

We developed a low-cost smartphone hyperspectral imaging system for under £100. This portable device enables accurate environmental data collection without complex post-processing, making hyperspectral imaging more accessible.

Keywords:
environmental monitoringfield deployablehyperspectrallow-costportablesmartphone

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Area of Science:

  • Environmental Science
  • Spectroscopy
  • Mobile Technology

Background:

  • Smartphone technology enables portable sensing tools for environmental data collection.
  • Hyperspectral imaging offers detailed spectral information but often requires expensive laboratory equipment.
  • Previous research has explored advanced sensing but lacked accessibility and portability.

Purpose of the Study:

  • To introduce a low-cost smartphone-based hyperspectral imaging system.
  • To demonstrate its capability for accurate hyperspectral data collection without extensive post-processing.
  • To evaluate its performance in various environmental applications.

Main Methods:

  • Conversion of a standard smartphone camera into a visible wavelength hyperspectral sensor.
  • Development of a system costing approximately £100.
  • Testing and comparison against laboratory-based systems and existing literature.

Main Results:

  • The developed system functions as a hyperspectral sensor for smartphones.
  • It achieves accurate hyperspectral data collection in both laboratory and field settings.
  • Performance is comparable to established methods and literature benchmarks.

Conclusions:

  • The Hyperspectral Smartphone provides an accessible and portable solution for hyperspectral imaging.
  • This technology shows significant promise for widespread environmental monitoring and analysis.
  • Smartphone-based hyperspectral imaging is a viable and advancing field.