存在几种其中通过内插或类似操作从输入视频信号的一个或更多图像导出输出视频信号的图像的情况。
There are several circumstances in which an image of an output video signal is derived by interpolation or the like from one or more images of an input video signal.
电脑外部视频采集就是从外部视频设备输出的视频信号经采集卡输入到电脑内，从而获取视频素材。
Computer exterior video gathering is to get video material through video signals gathered by a video Capture Card from exterior video devices.
在硬件设计主要介绍系统组成中的外部存储器模块与视频输入输出模块，介绍了使用片上支持库编写DM642中视频驱动程序的方法，以及编写过程中DM642中断和直接存储器存取（DMA）的应用；
The hardware chapter introduces the external memory module and video I/O module, programs video-driver for the DM642 by using CSL, discuss the applications of interrupt and direct memory access (DMA).
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