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Identifying Obstructed Street Signs

IP.com Disclosure Number: IPCOM000240337D
Publication Date: 2015-Jan-23
Document File: 3 page(s) / 47K

Publishing Venue

The IP.com Prior Art Database

Abstract

Disclosed is an automated system to monitor road signs, detect obstructions, and report any obstructions to the appropriate authority.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 52% of the total text.

Page 01 of 3

Identifying Obstructed Street Signs

City road signs are periodically obstructed by dynamic factors such as construction, vegetative growth, accumulation of snow, etc. Covered road signs can cause multiple issues of safety for pedestrians, cyclists, and drivers, especially if the obstructed sign is a speed limit sign or a school zone sign. The city generally relies on residents, police, city workers, etc. to report the obstructions. A systematic method is needed to frequently check for obstructions of road signs and report any to the local government , which can then dispatch a service provider to address the problem.

The novel contribution is an automated system to monitor road signs, detect obstructions, and report any obstructions to the appropriate authority.

Vehicles use a mounted, portable device to take pictures at a defined sampling rate of the road , both from the front of the vehicle and from a rear-facing camera. The range of the photograph includes the road and shoulder areas up to the standard height of street signs. The sampling rate can be dynamic; it can change depending upon the speed of the vehicle to ensure proper coverage.

The system also includes a centralized server. When the system detects a road sign, from both front and back, it reports to the centralized server. The system compares both feeds to detect the existence of a road sign , and using the front facing camera, detects how much of the sign is obstructed. Once a certain threshold is crossed, the unit communicates with the central server and creates an alert...