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Saturday, 25 March 2017

Railway Track Fault Detection

Here we propose an innovative approach to detect railway track crack as this system detects crack based on image processing. Many image preprocessing steps is used to detect railway track crack. As image is prone to noise. System converts image to grayscale image and uses filtering to remove noise from image. Noise removal helps to detect crack more accurately. Image luminous level is increased and image is converted to binary image. This helps system to detect only crack and helps to remove other unwanted objects. Image once converted to binary image, holes are filled by using image processing method this helps to reject all smaller objects which are not required for crack detection. Intensity value is used for accuracy purpose. Blob analysis method is used to detect large blobs. System detects crack based on number of connected components. System detects crack based on number of blobs involved and mentions whether crack exist or not. Using bounding box functionality, system displays rectangular box around the blob. This system used during railway track inspection. The proposed system is able to detect deeper cracks with 80% success rate and minor cracks with 50-60% accuracy                                                                                                            

     Ultrasonic detection is the method used. When the vehicle detects a crack, it sends a signal to the control room. While it is on the track, the device does not hinder movement of trains. When a train arrives, the device, which uses a pneumatic system, shrinks. The detector helps view the cracks on the track and its GPS system allows locating the vehicle.                                                                                               
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