ABSTRACT
This chapter looks at the basics of video and how images are created and transmitted. The ability to capture and transmit video images has led to the birth of multibillion dollar industries, such as television, that allow viewers to fantasize and “be there” without leaving the comfort of their own home. Video images are typically recorded in a professional studio with high-priced video cameras and microphones. From there, the video is sent via a high-bandwidth transmission medium to the receiving site. The video camera contains an image tube or target that automatically scans the scene and generates a corresponding electric output, which replicates the image that the camera sees in electronic form. Similarly, the video receiver reproduces the scanned image on the viewing screen. The video is of lower quality than commercial TV quality, with sound that is a bit harsh, but the cost is much lower than with high-quality Videoconferencing systems.
