Method and system for filtering compressed video images

Details Method and system for filtering compressed video images Method and system for filtering compressed video images

1996-01-19

1998-07-28

Boudreau, Leo

Image analysis

Image compression or coding

382260, G06K 900

Patent

active

057872031

ABSTRACT:
A video compression error signal in a video compression scheme is affected by random and high frequency impulse noise. An error signal suppressor containing two filters is applied to the video compression error signal. The first filter reduces or eliminates random noise. The second filter eliminates high frequency impulse noise. Random and high frequency noise is reduced or eliminated from frequencies that are unimportant to human visual perception. The error signal suppressor reduces the overall video compression bitrate by up to between 10% and 20% which provides corresponding increases in video compression and transmission efficiency. The error signal suppressor is used in video compression encoding schemes such as MPEG to reduce random and high frequency noise.

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