信号举例 （5) 视频信号Video signals Consists of a sequence of images,called frames,and is a function of 3 variables: 2 spatial coordinates and time Frame I Frame 3 Frame 5 2017/10/11 数字信号处理 10信号举例 （5） 视频信号 Video signals - Consists of a sequence of images called Consists of a sequence of images, called frames, and is a function of 3 variables: 2 spatial coordinates and time 2017/10/11 数字信号处理 10