Image acquisition system design Base on USB2.0
( Application Design)
ABSTRACT
Image acquisition system which uses real-time image acquisition technology has a very wide range of applications in various fields today, such as used in medical equipment, industry control, image pattern recognition, and other fields.
An image acquisition system which delivers image data based on USB 2.0 is introduced in this design. The system, first of all, through camera OV7220 collects images information, and then transfers to the USB chip EZ-USB FX2 for further treatment, and then through the USB bus transfers to the host, achieves real-time display. This article is mainly on its application design programmed by VC + +.First application interface and the corresponding order buttons are made by the MFC of VC, and then the C + + code are programmed to achieve the corresponding function. the functions of the order buttons are to open and close the USB devices, accept the image information and structure of bitmap to achieve real-time display images that can saved by users if interested in the image. This article detailed introduces the basic structure of the bitmap, the display and preservation of the bitmap, the communications between the host and USB devices, reading and writing USB devices, controlling USB devices.
