中文说明：很好的代码，可直接运行，有关光点字符输入，可用于图像检索中，其中包含了一些图片以及数据库，对于初学者来说，是一个很好的学习代码，希望对大家有帮助。
English Description：
Very good code can be run directly, about points of light character input and can be used for image retrieval, which contains some pictures as well as databases, for starters, is a very good learning code, hoped has the help to everybody.