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Electromagnetic imaging for complex cylindrical objects.

C C Chiu1, R H Yang

  • 1Dept. of Electr. Eng., Tamkang Univ., Tamsui.

IEEE Transactions on Medical Imaging
|January 1, 1995
PubMed
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This study presents a novel electronic imaging technique to reconstruct the dielectric permittivity of complex cylindrical objects. The method successfully images objects even with added random noise, demonstrating its robustness.

Area of Science:

  • Electromagnetic theory
  • Inverse problems
  • Imaging science

Background:

  • Reconstructing object properties from scattered fields is crucial in various scientific and engineering disciplines.
  • Imaging complex dielectric and conducting cylinders presents significant challenges due to wave interactions.

Purpose of the Study:

  • To develop and validate an electronic imaging algorithm for reconstructing the dielectric permittivity distribution of complex cylindrical objects.
  • To investigate the algorithm's performance under noisy conditions.

Main Methods:

  • Utilized an incident wave on penetrable inhomogeneous dielectric and perfectly conducting cylinders.
  • Employed external measurements of the scanned field.
  • Developed a theoretical formulation involving integral equations solved by the moment method and the unrelated illumination method.

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Main Results:

  • Successfully reconstructed the dielectric permittivity distribution of scanned objects.
  • Demonstrated the capability of the imaging algorithm through numerical results.
  • Showed good reconstruction accuracy even with additive random noise.

Conclusions:

  • The proposed electronic imaging method is effective for reconstructing dielectric properties of complex cylinders.
  • The algorithm exhibits robustness against random noise, making it suitable for practical applications.