利用BP神经网络实现字母识别；由于是新手，大家指正；-Using BP neural network implementation letter recognition are because novice, everyone correction

字母图像识别算法，O, E, A, U 四个字母进行识别，该算法加入一定噪声之后依然有效。-The basic goal of the program is to perform letter recognition of vowels O, E, A, U in paragraphs provided in form of black-and-white images. Using the training paragraph ima

letter recognition very good

opencv中，利用已有的模板库进行字母识别-letter recognition