采用v4l2 进行USB摄像头数据采集，并且，能够通过QT界面来进行图像数据的显示-Using v4l2USB camera data acquisition, and, through QT interface to the display image data,,,

qt开发环境下的usb调试助手，可以实现pc机与usb的数据传输，usb芯片采用的是CH375,方便使用-qt development environment for usb debugging assistant, can be achieved with the usb pc machine data transfer, usb chip is CH375, easy to use