matlab中，一段关于图片预处理的代码，图片的灰度归一化。-Face Recognition, a paragraph on the image pre-processing section of image gradation normalization Code

车牌识别matlab代码，建立了字符归一化模板，包含车牌图片，字符分割等。-License plate recognition matlab code, build character normalization template, including the license plate image, character segmentation.