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Bridge Strike - London Underground

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by

Bella Nguyen

on 25 July 2014

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Transcript of Bridge Strike - London Underground

Prevention of Bridge and Tunnel Strikes
What are Bridge Strikes?
Network Rail
Swindon
Ipswich
London
Georgia State:
Population 9.9 million
(153,909 km2)
<5.03m (16 ' 6")
Positive Samples
Negative Samples
Support Vector Machines
...analyzes data and recognizes patterns, used for classification purposes.
Vanishing Points
Boundary Boxes
Displays Truck Height
Results/Validations
Live Stream
Phase II - Trigger/Photo/Optimization
x
y
z
Detecting vanishing points within boundary box
TRUCK 1
TRUCK 2
Fairlop Station
Bridge Markings
Fairlop Station
Bridges in London
Number of Strikes
Validation
Ground Truth
Background Subtraction
Phase I
To conduct a feasibility study (proof of concept) using a digital video and advanced computer vision algorithms to attempt to determine the height of vehicles using a single camera.
(6 months)
Sydney Harbour Tunnel
Rain Curtain
METHOD 1
METHOD 2

Stopping Distances
600m
Bridge Strike
Project Aim
To provide early, reliable warning and notification of bridge strikes using a digital camera and accelerometer.
Phase II
Refining and optimizing the algorithm
Explore other (possibly simpler options) for detecting and warning of bridge strikes
Accelerometers on bridge structure
Real-time alerting of bridge strikes and photo evidence.
Phase II
London UK:
Population 8.3 million
(1,572 km2)
More than 24 million journeys made each day

10 strikes/day

Annual maintenance:
> £500,000 (approx. $850,000)
 1 "London Underground Key Facts". TfL website. Retrieved July 25 2014.

 1
Full transcript