The significance of license plate location based on Lab color space

Abstract

This paper proposes a significant license plate locating method based on Lab space. First of all, preprocess image, delete fog and uneven illumination areas. Then utilize a lookup table to accomplish the transformation from RGB to Lab, and use the characteristic of b component to extract the license plate area of blue and yellow. Finally use the significance of color and textures. The experimental results have proved that the license plate localization method is rapid and accurate.