ABSTRACT
Virtually all compression systems rely on some combination of the
basic processes outlined in this chapter. In order to understand
compression a good grasp of filtering and transforms is essential
along with motion estimation for video applications. These processes
only express the information in the best way for the actual compres-
sion stage, which almost exclusively begins by using requantizing to
shorten the wordlength. In this chapter the principles of filters and
transforms will be explored, along with motion estimation and
requantizing. These principles will be useful background for the
subsequent chapters.
