WASET
    G.P. Nguyen and  H.J. Andersen,  A Fast Sign Localization System Using Discriminative Color Invariant Segmentation.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    October 2008, vol. 22(10). 3411 - 3417
    [viewed 25 April 2024]. Available from: https://publications.waset.org/pdf/6924.