System for Coring an Image-Representing Signal
Carlson, C. R., Adelson, E. H., and Anderson, C. H.
United States Patent 4,523,230 (1985).
Noise reduction is achieved, without the introduction of noticeable artifacts in the displayed image, using (1) a
non-ringing, non-aliasing, localized transfer, octave-band spectrum analyzer for separating the video signal
representing the image into subspectra signals, (2) separate coring means for one or more of the analyzed subspectra
signals, and (3) then a synthesizer employing one or more non-ringing, non-aliasing filters for deriving an output
image-representing signal from all of the subspectra signals.