Road-sign detection and tracking

Chiung Yao Fang*, Sei Wang Chen, Chiou Shann Fuh

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

269 Citations (Scopus)


In a visual driver-assistance system road-sign detection and tracking is one of the major tasks. This study describes an approach to detecting and tracking road signs appearing in complex traffic scenes. In the detection phase, two neural networks are developed to extract color and shape features of traffic signs from the input scenes images. Traffic signs are then located in the images based on the extracted features. This process is primarily conceptualized in terms of fuzzy-set discipline. In the tracking phase, traffic signs located in the previous phase are tracked through image sequences using a Kalman filter. The experimental results demonstrate that the proposed method performs well in both detecting and tracking road signs present in complex scenes and in various weather and illumination conditions.

Original languageEnglish
Pages (from-to)1329-1341
Number of pages13
JournalIEEE Transactions on Vehicular Technology
Issue number5
Publication statusPublished - 2003 Sept


  • (HSI) color model
  • Fuzzy integration
  • Hue
  • Intensity
  • Kalman filter
  • Neural networks
  • Road-sign detection and tracking
  • Saturation

ASJC Scopus subject areas

  • Automotive Engineering
  • Aerospace Engineering
  • Electrical and Electronic Engineering
  • Applied Mathematics


Dive into the research topics of 'Road-sign detection and tracking'. Together they form a unique fingerprint.

Cite this