Video Signal Processing

Watching video is the most popular way for people to enjoy multimedia contents. However, videos are required to be displayed at different rate because there are many different display devices nowadays. In this chapter, we introduce the background knowledge, applications, and technical details of current multirate video systems. First, we introduce the basic concept and knowledge of the video system. In addition, several examples of multirate video applications are shown. Afterward, we explain the key techniques to achieve these applications from the fundamental frame rate conversion (FRC) and the advanced frame rate up-conversion (FRUC). We also state the motivation of higher frame rate before the FRUC techniques are presented. The general flow diagram of the FRUC techniques is given, and the technical details are then discussed and stated. Moreover, several evaluation methods are explained, and the popular video datasets are shown. In addition to different algorithms, we discuss the requirement and recent researches of hardware implementation for FRUC techniques. Finally, a conclusion and discussion are given.