
Chapter 6
Demosaicking and deinterlacing
6.1 Introduction
We have seen in Chapter 3 that image sensors measure light intensity but
not its wavelength, and that in order to capture colors the most common
configuration is to use a single sensor covered with a mosaic color filter called
Color Filter Array (CFA). By far the most popular CFA is the Bayer pattern,
using an RGB color choice with two green pixels per red or blue pixel; see
Figure 6.1.
FIGURE 6.1: Bayer CFA.
Therefore each pixel only has information of a single color channel, and the
other two values must be interpolated through a process called demosaicking
or demosaicing. Basic interpolation tec ...