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IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT, VOL. 49, NO. 3, JUNE 2000 559 Composite Real-Time Image Processing for Railways
 

Summary: IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT, VOL. 49, NO. 3, JUNE 2000 559
Composite Real-Time Image Processing for Railways
Track Profile Measurement
Cesare Alippi, Ettore Casagrande, Fabio Scotti, and Vincenzo Piuri, Senior Member, IEEE
Abstract--Checking railway status is critical to guarantee
high operating safety, proper maintenance schedule, and low
maintenance and operating costs. This operation consists of the
analysis of the rail profile and level as well as overall geometry and
ondulation. Traditional detection systems are based on mechanical
devices in contact with the track. Innovative approaches are based
on laser scanning and image analysis. This paper presents an
efficient composite technique for track profile extraction with
real-time image processing. High throughput is obtained by algo-
rithmic prefiltering to restrict the image area containing the track
profile, while high accuracy is achieved by neural reconstruction
of the profile itself.
Index Terms--Image processing, laser-based measurement,
neural networks, real-time measurement.
I. INTRODUCTION
SAFETY in railways and tramways is one of the key issues of

  

Source: Alippi, Cesare - Dipartimento di Elettronica e Informazione, Politecnico di Milano

 

Collections: Computer Technologies and Information Sciences