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Differential Binary Encoding Method for Calibrating Image Sensors Based on IOFBs
Department of Electronics, University of Alcalá, Alcalá de Henares, 28871 Madrid, Spain
Department of Telecommunications and Electronics, University of Oriente, Santiago de Cuba, 90400, Cuba
* Author to whom correspondence should be addressed.
Received: 3 February 2012; in revised form: 20 March 2012 / Accepted: 22 March 2012 / Published: 27 March 2012
Abstract: Image transmission using incoherent optical fiber bundles (IOFBs) requires prior calibration to obtain the spatial in-out fiber correspondence necessary to reconstruct the image captured by the pseudo-sensor. This information is recorded in a Look-Up Table called the Reconstruction Table (RT), used later for reordering the fiber positions and reconstructing the original image. This paper presents a very fast method based on image-scanning using spaces encoded by a weighted binary code to obtain the in-out correspondence. The results demonstrate that this technique yields a remarkable reduction in processing time and the image reconstruction quality is very good compared to previous techniques based on spot or line scanning, for example.
Keywords: image sensor; image transmission; sensor calibration; optical fiber sensors
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Fernández, P.R.; Lázaro-Galilea, J.L.; Gardel, A.; Espinosa, F.; Bravo, I.; Cano, Á. Differential Binary Encoding Method for Calibrating Image Sensors Based on IOFBs. Sensors 2012, 12, 4133-4155.
Fernández PR, Lázaro-Galilea JL, Gardel A, Espinosa F, Bravo I, Cano Á. Differential Binary Encoding Method for Calibrating Image Sensors Based on IOFBs. Sensors. 2012; 12(4):4133-4155.
Fernández, Pedro R.; Lázaro-Galilea, José Luis; Gardel, Alfredo; Espinosa, Felipe; Bravo, Ignacio; Cano, Ángel. 2012. "Differential Binary Encoding Method for Calibrating Image Sensors Based on IOFBs." Sensors 12, no. 4: 4133-4155.