Method of circle detection in images for round traffic sign identification and vehicle driving assistance device.

Abstract : The invention relates to a method of circle detection in images for round traffic sign identification, including two stages: - a first stage of detection (101) to detect centers of a group of candidates circles in an image by: - calculating the edges on said image, - applying a Hough transform on said edges to identify the centers of a group of candidates circles, and - a second stage of validation (102) where a circle is selected from said group of candidates circles, characterized in that in said second stage of validation (102), a dispersion gradient criterion measuring the luminance gradient dispersion is calculated for each candidate circle of said group of candidates circles and in that the candidate circle among said group of candidates circles that has the lowest dispersion gradient criterion is selected as a detected circle to identify a round traffic sign. The invention also relates to a vehicle driving assistance device to implement said method of circle detection in images for round traffic sign identification.
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https://hal.inria.fr/inria-00558587
Contributor : Fawzi Nashashibi <>
Submitted on : Saturday, January 22, 2011 - 1:23:14 PM
Last modification on : Tuesday, October 22, 2019 - 2:21:56 PM

Identifiers

  • HAL Id : inria-00558587, version 1

Citation

Fawzi Nashashibi, Alexandre Bargeton, Fabien Moutarde, Benazouz Bradai. Method of circle detection in images for round traffic sign identification and vehicle driving assistance device.. Germany, Patent n° : PCT/EP2010/007569. SFR4007. 2010, pp.15. ⟨inria-00558587⟩

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