ROAD SIGN RECOGNITION METHOD AND SYSTEM

Road sign recognition method and system. The method includes performing HSV space color threshold binarization on a single frame image in a road image, obtaining a sign connected region through localization; calculating a length-to-width ratio of the sign connected region to eliminate a false target...

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Bibliographic Details
Main Authors WANG, Shuliang, LIU, Guohu, CHENG, Jianwei, XU, Duan
Format Patent
LanguageEnglish
Published 14.11.2019
Subjects
CALCULATING
COMPUTING
COUNTING
IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
PHYSICS
SIGNALLING
TRAFFIC CONTROL SYSTEMS
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Summary:Road sign recognition method and system. The method includes performing HSV space color threshold binarization on a single frame image in a road image, obtaining a sign connected region through localization; calculating a length-to-width ratio of the sign connected region to eliminate a false target, calculating a distance from a contour edge to a target center position in the sign connected region, obtaining a target localization region with a circular contour of the sign connected region; intercepting a corresponding grayscale image and calculating an average grayscale value of the grayscale image, performing binarization on the grayscale image in the target localization region, obtaining a binary image of each target localization region; extracting connected regions in the binary images, sorting the connected regions according to coordinates; calculating and determining number or character inside the target localization region by using a neural-network mode recognition algorithm; and calculating confidence.
Bibliography:Application Number: US201916519346