光学字符识别（即OCR）技术。给出了一些基于linux/KDE的英文OCR代码，该代码对于如何实现一个OCR系统有很好的启发性。-Optical character recognition (ie OCR) technology. Gives some based on linux/KDE English OCR code, the code for how to achieve an OCR system is a good instructive.

一种基于光学信息处理技术的图像加密技术，该加密技术室基于4F系统的一种双随相位加密技术-One image encryption technique based on the optical information processing technology, the encryption technology chamber with the phase of the 4F system of a double encryption technique

利用光学信息处理技术的一种图像加密技术，加密效果非常好-Using an optical information processing technology, an image encryption technique, an encryption effect is very good