DigitalEyes is an OCR (Optical Character Recognizer) developed in C/Caml. usage : ./digitaleyes[.opt] [processes in chronological order] file -noise Reduces image noise. -rotate Finds angle and rotate image. -lessons Builds the lessons

基于cortexA9开发板的图像采集与梯度幅度求取代码，已调试，好用。-Image acquisition and gradient amplitude based on cortexA9 development board code sequence, have been debug, easy to use.