Volume 47, Issue 3 (May 2002)

    A 3-D Transformation to Improve the Legibility of License Plate Numbers

    (Received 16 October 2001; accepted 30 September 2001)

    Published Online: May

    CODEN: JFSOAD

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    Abstract

    In this paper, a novel three-dimensional transformation method for vehicle license plate number recognition is proposed. This method provides an efficient solution to normalize skew distorted vehicle license plate images. The Hough transform is used to estimate the license plate position and the normalization angle. After the three-dimensional transformation and normalization processes, the vehicle license plate numbers are recognized easily. Real vehicle license plate images are used to show the capability of the proposed method. The provided method is also useful for other skewed writings, such as the text printed on a suspect's shirt.


    Author Information:

    Yu, C-C
    Central Police University, Taoyuan,

    Wen, C-Y
    Central Police University, Taoyuan,

    Hun, Z-D
    Central Police University, Taoyuan,


    Stock #: JFS15298J

    ISSN: 0022-1198

    DOI: 10.1520/JFS15298J

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    Author
    Title A 3-D Transformation to Improve the Legibility of License Plate Numbers
    Symposium , 0000-00-00
    Committee E30