
116 Image and Video Compression
6.6.1 Interframe Predictive Coding
Owing to the fact that two successive frames of a video sequence are highly
correlated, we can predict the current frame from the previously coded
frame. This is called the predictive video coding technique. For efcient video
coding, computation of prediction of a frame plays a signicant role. Thus, in
the interframe coding technique, frames are coded based on some relation-
ship with other video frames (i.e., coding exploits the interdependencies of
video frames). Interframe predictive coding is shown in Figure6.3.
Frame differencing is the simplest form of predictive coding. ...