All you have to do is watch a video of people passing a basketball and count how many times the players wearing white pass the ball.
你所要做的就是就是观看一个传球的视频，然后数出穿白色球衣的人传了多少次球。
For example filters can read files get video from a video capture device decode various stream formats and pass data to the graphics or sound card.
例如，筛选器可以读取文件，从视频捕获设备获取视频，解码各种流格式，以及将数据传递到图形卡或声卡。
The picture elements across a line are converted to the video signal and low-pass filtered with an electrical filter .
沿着一条直线的图象象素被转换成视频信号，然后由一个电子滤波器进行低通滤波。
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