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Sensor Calibration Based on Incoherent Optical Fiber Bundles (IOFB) Used For Remote Image Transmission.

José L Lázaro1, Pedro R Fernández, Alfredo Gardel

  • 1Electronics Department, University of Alcalá, Superior Polytechnic School, Universitary Campus, Alcalá de Henares (28871), Madrid, Spain; E-Mails: pedro.fernandez@depeca.uah.es (P.R.F.); alfredo@depeca.uah.es (A.G.); caluna@depeca.uah.es (C.A.L.).

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This study introduces a faster line-scan calibration method for incoherent optical fiber bundles (IOFB) image transmission. The new technique significantly reduces processing time and enhances reconstructed image quality.

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Area of Science:

  • Optics
  • Image Processing
  • Sensor Technology

Background:

  • Image transmission via incoherent optical fiber bundles (IOFB) necessitates precise spatial calibration for accurate image reconstruction.
  • Existing calibration methods often involve time-consuming processes to establish fiber-to-fiber correspondence, recorded in a Look-Up Table (LUT).

Purpose of the Study:

  • To present an efficient line-scan based method for determining the spatial in-out fiber correspondence in IOFB systems.
  • To improve the speed and quality of image reconstruction from pseudo-sensors utilizing IOFB.

Main Methods:

  • A novel line-scan technique was developed to map the spatial relationship between input and output fibers.
  • The method incorporates a specialized fiber detection algorithm and an intensity compensation process.
  • A single interpolation algorithm is employed for efficient image reconstruction.

Main Results:

  • The proposed line-scan calibration method significantly reduces the overall processing time required for image reconstruction.
  • The technique leads to a marked improvement in the quality of the reconstructed images.
  • The integrated algorithms enhance the accuracy of fiber position reordering.

Conclusions:

  • The line-scan based calibration method offers a substantial advancement in IOFB image transmission.
  • This approach provides a faster and more effective solution for image reconstruction compared to traditional methods.
  • The optimized calibration process enhances the practical applicability of pseudo-sensors using IOFB.