VISUAL MONITORING OF RAILROAD GRADE CROSSING AND RAILROAD TRACKS University of Central Florida
Phase I Visual Monitoring of Railroad Grade Crossing
Objectives Monitor railroad grade crossing for hazardous behavior. Issue a audio/visual alert. Self-contained portable system
System Overview The main processing pipeline of the system: Object Detection Tracking Object Classification Activity Recognition Trigger Alarm
Computer Vision Laboratory University of Central Florida The Portable System Batteries Main Processing Unit Carrying Unit Solar Panels Camera
Computer Vision Laboratory University of Central Florida Website Interface Each site contains Live image Latest log file data Trains detected Train title Date Time Objects detected Object ID Date/Time
Computer Vision Laboratory University of Central Florida Alerts alerts are triggered on activities Alert frequency can be changed by user parameters Each contains Site source location Message about activity Image of object involved in activity
Performance Evaluation Detected Violators P421 Mount Dora New Smyrna Beach P127 P , 11:32: , 11:32: , 13:18: , 11:01: , 12:42: , 15:17:53
Visual Inspection of Railroad Tracks Phase II
Mobile Platform Design Basler A400 High speed firewire
Mobile Platform The main factors driving the design of the mobile platform are: Portability Image Stability Uniformity of Illumination conditions
Mobile platform
Video obtained from mobile platform Example rail video obtained from mobile platform
Defect detection
Engine Burn Defects A condition in which the rail has been scarred by the heat created by locomotive. Appearance in track. Round or oval rough spots or holes on the surface of the rail. Burn area 1 1 Railroad Track Standards, Departments of the Army (TM 5-628)
Processing Pipeline Input video frame Smooth with a Gaussian Mean shift segmentation Compute region properties CircularityColor momentsWaveletsHeterogeneity SVM
Results = Detection= Confidence
Results
Potential burn regions
Rail Crack Defects
Rail Cracks Stress caused by the wheels of the train can lead to cracks on the rail head. Rail Stress
Processing Pipeline
Current work
Rail Gauge Verification Objective: Verify that the distance between rails is within a safe margin. Synchronized high speed cameras Rail Gauge
Missing Fasteners Detect missing fasteners Steel Clips or Fasteners Missing fasteners
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