The following information was submitted:
Transactions: WSEAS TRANSACTIONS ON SIGNAL PROCESSING
Transactions ID Number: 28-255
Full Name: Olivier Demuynck
Position: Student
Age: ON
Sex: Male
Address: IDC Tecnologia - Olivier Demuynck / APARTADO CORREOS 216 / 28803 ALCALA DE HENARES (MADRID)
Country: SPAIN
Tel: 652 207 865
Tel prefix: (+34)
Fax:
E-mail address: odemuynck@hotmail.com
Other E-mails: odemuynck@idc.es, jmm@gatv.ssr.upm.es
Title of the Paper: image transmission through incoherent optical fiber bundle: methods for optimization and image quality improvement
Authors as they appear in the Paper: Olivier Demuynck, José Manuel Menéndez
Email addresses of all the authors: odemuynck@hotmail.com, jmm@gatv.ssr.upm.es
Number of paper pages: 11
Abstract: Artificial vision, in spite of all theoretical and practical progress accomplished during last thirty years, still cannot be employed technically in some hazardous and strong industrial areas, where conditions are such that cameras would not operate properly. Possible alternatives on such problem are the quite recent IP65 and IP67 industrial cameras, and associated connectors, protected by an anticorrosive, waterproof, and high temperatures resistive carcass employing a dedicated electronic, in addition robust to almost 3G accelerations. Nevertheless, such cameras are still very expensive compared to conventional industrial cameras and would still not be enough in hardest conditions (explosive gas or dust environment) or in electromagnetic interferences environments. A good alternative in extreme conditions is the use of optical fiber bundle. Since such cable only transmits light, they intrinsically have electromagnetic interferences immunity and, depending on the !
fiber material, could be exposed to very high temperature (over 1000ºC for sapphire fibers for example), could be employed in almost all corrosive environment, and are totally submersible. Nevertheless, the coherent optical fiber bundles are very expensive, and for large distances could be non-competitive facing the other hardware solutions (armor plating, electromagnetic interferences isolation). Thus, the best suitable option to develop a competitive system in those particular cases is the use of incoherent optical fiber bundle (IOFB), nowadays just employed for illumination tasks. Image transmission in this case is not direct but require a calibration step that we discuss in this paper. Improvement of the noisy resulting quality image is also exposed here, achieved by experimental post calibration methods. We propose in this work a new calibration method of incoherent optical fiber bundle (IOFB) for image transmission purpose. Firstly, we present the calibration method !
(an enhancement of previously published calibration methods), some res
ulting reconstructed images and a discussion on its quality improvement employing simple denoising methods assisted by low pass filters (smooth filter, resizing method,…) . We finally depict the two new post calibration methods, and its associated noise generator physical phenomena we want to treat. Those two post calibration method are: correction of the input plane optical aberrations and extraction of a unique pixel (almost centered) for each fibers. We finally present some resulting images that demonstrate how it efficiently refine the reconstruction Look Up Table (LUT) used for the output image reconstruction improving image quality, image contrast but also reconstruction processing time.
Keywords: Image transmission, Incoherent optical fiber bundle, Hazardous environment, Calibration
EXTENSION of the file: .pdf
Special (Invited) Session: Optimized and Quality Improved Incoherent Optical Fiber Bundle Calibration Method for Image Transmission
Organizer of the Session: 594-397
How Did you learn about congress:
IP ADDRESS: 80.26.124.12
