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Railroad track inspection by means of a real-time image processing system
Published June 14, 1999 by ISATA - Dusseldorf Trade Fair in United Kingdom
Event: ISATA 1999
Automatic railroad track inspection is a challenging field. The increasing demands made on traveling speed, safety and comfort lead to the necessity of shorter inspection intervals to guarantee higher-level track quality. The expense caused by these needs is enormous since this inspection is presently performed by so called track inspectors who walk along the whole track for its examination.
In this paper, algorithms are proposed which permit to detect damage on rails, fastenings and ties, laying in this manner, important groundwork for automated railroad track inspection. This automatic inspection is primarily based on data acquisition by digital line scan cameras and subsequent evaluation of this data by image processing algorithms. Data analysis is performed in real time for vehicle speeds of up to 160 km/h.