一种字符定位及识别技术在交通领域的应用

字符定位与识别技术在交通领域应用广泛.字符识别系统包括字符图像的拍摄、预先处理,将字符从图中截取出来,最后对字符对比甄别.采用灰阶处理、均值滤波等方法对图像预处理.在字符定位部分,采用边缘检测算法对字符图像在原始图中位置进行定位.在字符分割前,对字符进行二值化及倾斜校正.利用区域增长(region growing)方法...

Application of a Character Positioning and Recognition Technology in the Field of Transportation

Character positioning and recognition technology is widely used in the transportation field.The character recognition system includes character image shooting,preprocessing,character extraction and recognition.Character image preprocessing is a key step in character positioning and recognition.In the paper,character images are preprocessed for grayscale,mean filter,median filter and other methods.The character positioning method of character image edge detection and mathematical morphology is realized,and the character area can be accurately extracted.In order to improve the effectiveness of character recognition,the characters need to be binarized and skew correction.Using the strategy of combining region growing and projection,the character segmentation is completed.Finally,a template library is established,and an improved algorithm based on template matching is used for character discrimination.Take the preprocessing of car license plate,character extraction and recognition as examples to illustrate the effectiveness of the technology used in the paper.