ABSTRACT
Introduction Readers with classical optics education may not find the compressive sensing (CS) notions introduced in Chapter 1 so natural or corresponding well with the familiar optical science and engineering lexicon. This is partly because CS theory was born and has evolved mainly in fields such as information theory, computational mathematics, and signal processing, and, therefore, its formalism, notions, and concepts do not necessarily overlap those found in typical optics textbooks. This chapter aims to bridge the gap between CS formalism and that of standard optics textbooks. Readers who found the mathematics of Chapter 1 sufficiently clear, or do not feel the need for a better intuitive understanding, may skip this chapter and proceed to the following chapters.
