A new algorithm for automatic identification of vehicle license plate is proposed in this paper.
The proposed algorithm uses image segmentation and morphological operation to accurately
identify the location of license plate with various background illuminations. The license plate is
identified in two steps. At first the original image is segmented using edge detection and
morphological operations. Then, the power spectrum (PS) is analyzed in horizontal and vertical
directions to identify the license plate. The magnitude of the power frequency spectrum shows
special characteristics corresponding to the license plate segment. The proposed algorithm is tested
with different gray level car images from different angles of view and the results are all consistent.
The proposed algorithm is fast and can effectively identify license plates under various illumination
conditions with high accuracy.