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    New Hybrid Technique for traffic sign recognition

    Access Status
    Fulltext not available
    Authors
    Lim, Hann
    Ang, L.
    Seng, K.
    Date
    2008
    Type
    Conference Paper
    
    Metadata
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    Citation
    Lim, H. and Ang, L. and Seng, K. 2008. New Hybrid Technique for traffic sign recognition.
    Source Title
    2008 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2008
    DOI
    10.1109/ISPACS.2009.4806678
    ISBN
    9781424425655
    School
    Curtin Sarawak
    URI
    http://hdl.handle.net/20.500.11937/3097
    Collection
    • Curtin Research Publications
    Abstract

    A hybrid traffic sign recognition scheme combining of knowledge-based analysis and radial basis function neural classifier (RBFNN) is proposed in this paper. Initially, traffic signs are detected from the road scenes using color segmentation method. The extracted signs are then passed to the recognition system for classification. The proposed recognition technique composes of three stages: (i) color histogram classification, (ii) shape classification and, (iii) RBF neural classification. Based on the unique color and shape of traffic signs, they can be classified into smaller subclasses and can be easily recognized using RBFNN. Before feeding traffic sign into the RBFNN, traffic sign features are extracted by Principle Component Analysis (PCA) in order to reduce the dimensionality of the original images. This is followed by the Fisher's Linear Discriminant (FLD) to further obtain the most discriminant features. The performance of the proposed hybrid system is evaluated and compared to the purely neural classifier. The experimental results demonstrate that the proposed method has better recognition rate.

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