中文说明： 在matlab上进行GUI界面的仿真，基于BP神经网络对字符进行识别，首先在图片中选择要识别的字符，使用imcrop函数提取字符，随后对提取的图片进行预处理，最后在自己建立的神经网络（在这里是已经建立好的.mat文件）中识别选择的字符，最后在界面中显示结果。
English Description：
In Matlab GUI interface simulation, based on BP neural network for character recognition, first select the characters to be recognized in the picture, use imcrop function to extract characters, then preprocess the extracted picture, finally recognize the selected characters in the neural network (here is the established. Mat file), and finally display the results in the interface.