This book presents a method for license plate recognition through analysis of vehicle images. Accurate location of license plate and extracting characters of plate are implemented. The book puts forward arithmetic of plate edge recognition by morphology algorithms the transform is used to adjust different angles between viewer and license plate, at last characters extraction is done by histogram. And the extraction characters are matched with the templates. The results show that this approach can recognize license plates more effectively and establish a good technical base for the future advanced license plate recognition.