Processing for compression
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 compression 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.
In compression systems it is very important to remember that the valuable commodity is ...