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Sensors 2012, 12(7), 9006-9023; doi:10.3390/s120709006

Improving the Calibration of Image Sensors Based on IOFBs, Using Differential Gray-Code Space Encoding

1
Electronics Department, University of Alcalá, Superior Polytechnic School, University Campus, Alcalá de Henares 28871, Madrid, Spain
2
Telecommunication Department, University of Oriente, Av. de las Américas, SN, Santiago de Cuba 90400, Cuba
*
Author to whom correspondence should be addressed.
Received: 15 May 2012 / Revised: 15 June 2012 / Accepted: 28 June 2012 / Published: 2 July 2012
(This article belongs to the Section Physical Sensors)
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Abstract

This paper presents a fast calibration method to determine the transfer function for spatial correspondences in image transmission devices with Incoherent Optical Fiber Bundles (IOFBs), by performing a scan of the input, using differential patterns generated from a Gray code (Differential Gray-Code Space Encoding, DGSE). The results demonstrate that this technique provides a noticeable reduction in processing time and better quality of the reconstructed image compared to other, previously employed techniques, such as point or fringe scanning, or even other known space encoding techniques. View Full-Text
Keywords: image sensor; fiber imaging; image transmission; sensor calibration; optical fiber sensors image sensor; fiber imaging; image transmission; sensor calibration; optical fiber sensors
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This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Fernández, P.R.; Lázaro Galilea, J.L.; Gardel Vicente, A.; Bravo Muñoz, I.; Cano García, Á.E.; Luna Vázquez, C. Improving the Calibration of Image Sensors Based on IOFBs, Using Differential Gray-Code Space Encoding. Sensors 2012, 12, 9006-9023.

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