04658286 is referenced by 47 patents and cites 8 patents.

A method and apparatus for defining a plurality of subcategories of the information content of the input to a reproduction system and generating a set of signals corresponding to each such subcategory for the system output and an idealized output. The sets of signals are analyzed to derive a third set of signals which are used to improve a selected aspect or characteristic of rendition fidelity of the reproduction system output. While the invention is described in the context of video systems the principles disclosed are equally applicable to photography, optical scanners and audio systems as well as other multi-channel reproducing systems.

Title
Method and apparatus for correcting distortions in reproducing systems
Application Number
6/479275
Publication Number
4658286
Application Date
March 28, 1983
Publication Date
April 14, 1987
Inventor
Tai T Wu
147 Ridge St., Arlington, 02174
MA, US
Jack Schwartz
147 Ridge St., Arlington, 02174
MA, US
Agent
Robert F Van Epps
IPC
H04N 5/14
View Original Source