Differential Binary Encoding Method for Calibrating Image Sensors Based on IOFBs

Sensors

Pedro R. Fernández¹  José Luis Lázaro-Galilea¹  Alfredo Gardel¹  Felipe Espinosa¹  Ignacio Bravo¹ 

[1] Department of Electronics, University of Alcalá, Alcalá de Henares, 28871 Madrid, Spain; E-Mails:

关键词: image sensor;    image transmission;    sensor calibration;    optical fiber sensors;   

DOI  :  10.3390/s120404133

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2012 by the authors; licensee MDPI, Basel, Switzerland.