05335292 is referenced by 113 patents and cites 8 patents.

A document processing system for processing documents having data printed thereon including markings visible to the eye, but which are not to be read by the system and characters which are to be read by the system includes structure for scanning a document for capturing the color image of the document being processed and for generating a plurality of colored picture elements. Circuity is provided for identifying colors included within the core area and edge of the markings. The colors of the picture elements of the core area and edge of the markings are converted to the color of the background of the document thereby generating a filtered image of the document. An optical character recognition unit is provided for receiving the filtered image of the document representing character information only and for identifying the characters appearing on the document from the filtered image, such that the markings and the background surrounding a character are not distinguishable by the optical character recognition unit.

Title
Document processing system and method
Application Number
289596
Publication Number
5335292
Application Date
February 6, 1991
Publication Date
August 2, 1994
Inventor
Medford D Sanner
Irving
TX, US
Kenneth T Lovelady
Irving
TX, US
Agent
Ross Howison Clapp & Korn
Assignee
Recognition International
TX, US
IPC
G06K 9/00
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