现在，不管是任何板卡组合还是直接与摄像头连接，均可用于单个应用。
Now any combination of frame grabbers or direct connect cameras can be used in a single application.
如果能在嵌入式系统中增加一个能与usb摄像头连接的USB主机，实现图像数据的采集，则可以使嵌入式系统的应用扩展到图像处理领域。
We will realize the image processing in embedded systems, if we can add a USB host which connects a USB camera device to acquire the image data.
安装在不同地点的摄像头通过电缆连接到视频卡，然后拦截到的图像或视频被存储到系统的大硬盘上。
Cables run from cameras mounted in various locations to that video card, and the captured images or video is then stored on the system's massive hard disks.
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