FY语音聊天系统。使用google开源DUI做界面库。boost::asio做网络底层。openal实现语音，opencv实现视频，jpeg压缩。使用mysql数据库。系统实现了用户注册，密码找回，好友上下线提醒，文字语音聊天，视频聊天。-FY voice chat system. Use google to do open source DUI interface library. boost:: asio do network infrastructure. openal voice, op

基于Linux下的opencv库，实现bmp图片的灰度和二值化，适用于对有杂质的二维码进行处理。-Based on OpenCV under the Linux library, to achieve BMP image gray and binarization, suitable for the treatment of impurities in the two-dimensional code.