基于机器视觉的嘴巴状态检测方法：利用BP神经网络-based machine vision mouth State Detection Methods : Artificial Neural Network

对图像的亮度分布曲线进行人工智能学习，并分类的多隐含层的BP神经网络(The BP neural network of the multi hidden layer of artificial intelligence learning for the brightness distribution curve of the image and the classification of the multi hidden layer)