Introduction - If you have any usage issues, please Google them yourself
In this particular application, scanning Lidar equipment is used to
detect cross sections of clouds or plumes. The same scan geometry,
however, is used in medical ultrasound and other types of imaging.
The Lidar principle uses a laser beam to detect atmospheric reflection
intensity at various range resolved distances along the beam axis.
Each such measurement is a line scan (intensity versus distance).
The beam is swept up and down using a mechanical linkage driven by a
motor at constant speed. At equal time intervals, successive scan
lines are recorded. Harmonic motion of the beam rocking linkage
results in approximately sinusoidal scan angles with time.
A set of successive scan lines forms an acquired image. Images record
reflected intensity as a function of radial distance and sweep angle.
Hence, scan images are acquired in polar (curvelinear) space with
nonuniform spacing.
In this case the goal of image processing is to analyze the size and
location of