A novel approach for license plate location in natural images
Extraction of the license plate region is challenging first step in the license plate recognition system. The paper proposed approach is not only simple but also more effective than some of the existing method earlier. A new dynamic RGB threshold formula by limiting the hue change range is educed. The license image is made grids. Then we can plot and mark them by the formula and operate them with mathematical morphology because of precision cutting the license knowledge. More than five hundred images are tested, none of the results manifested missed. Only 1 candidate absented plate had been got. Plates were extracted and a 99% rate was achieved.
2009 Second International Conference on the Applications of Digital Information and Web Technologies