1.1 Noise Characterization
- Every kind of Noise has a spatial or temporal statistical distribution and
statistical distribution on the magnitude
(each of which can be:
Guassian,
Poisson, Uniform, etc.)
- Noise has a physical reason such as: thermal events, hard radiation, auto
ignition, power supply and power line or electromagnetic impulses (e.g.
due to lightning or power surges of external units being turned on or off),
mechanical strain on electrical connections, etc.
- Every pixel can have a small offset with decreasing likelihood for the magnitude of the offset with some distribution (usually due to thermal events).
- Every pixel can have a small likelihood to have a large spike offset, making near white or black pixels - (the so called speckle, salt and pepper, drop out or shot noise) usually due to intense short electromagnetic impulses.
- Any bit in any pixel has a relatively low statistical liklelihood to be flipped
in value (typically due to power and ground level fluctuations).
