
Deinterlacing
37
Figure 37.1 Test scene
FIRST
FIELD
SECOND
FIELD
Figure 37.2
Interlaced capture
In
Interlace artifacts,
on page 60, I explained that when
a scene element in motion relative to the camera is
captured in an interlaced system, the scene element
appears at different positions in the two fields. Recon-
struction of progressive frames is necessary for certain
image-processing
operations, such as upconversion,
downconversion, or standards conversion. Also,
computer
displays
use progressive scanning: Inte-
grating video imagery into computer displays also
requires deinterlacing. This chapter ...