Slant Correction of Vehicle License Plate Based on Color Pair Principal Component Analysis
基于颜色对特征点主成分分析的车牌校正方法

In this paper ,slant correction methods of vehicle license plate are analyzed and an approach based on color pair and principal component analysis is prestented.A pixel is considered as a color pair point if its color pattern matches the combination of the background color and text color of the plate.The principal component orientation of the plate is achieved through principal component analysis of the color pair pixels.The principal component orientation is considered as the slant angle of the plate and the correction of the plate is accomplished.The experiment results demonstrate that this method makes the correction of the plate easier and more precise.The images of dirty vehicle license can also obtain effective results through this algorithm.