Transform Coding

13.1 Overview

In this chapter we will describe a technique in which the source output is decomposed, or transformed, into components that are then coded according to their individual characteristics. We will then look at a number of different transforms, including the popular discrete cosine transform, and discuss the issues of quantization and coding of the transformed coefficients. This chapter concludes with a description of the baseline sequential JPEG image-coding algorithm and some of the issues involved with transform coding of audio signals.

13.2 Introduction

In the previous chapter, we developed a number of tools that can be used to transform a given sequence into different representations. If we take a sequence of inputs ...

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