06182090 is referenced by 188 patents and cites 31 patents.

An example page taken from each document in a document database is processed by a page processor to yield an iconic representation for the example page. To form the iconic representation, the example page is segmented into text regions, line art regions, photograph regions, etc., and each region is reduced in a manner appropriate for that image type. Text is replaced with a block font and reduced, while graphics are reduced in level and/or spatial resolution. The reduced regions of the example page are then reassembled into the icon. When multiple icons are printed on a guide page, a user can visually identify the icon for an example page of a target document and supply the icon, or a label for the icon, to a document retrieval system, which selects candidate matching documents from the document database. For simplified processing, characters can be blocked and words formed into solid line segments with lengths proportional to word lengths.

Title
Method and apparatus for pointing to documents electronically using features extracted from a scanned icon representing a destination
Application Number
8/825947
Publication Number
6182090 (B2)
Application Date
March 31, 1997
Publication Date
January 30, 2001
Inventor
Mark Peairs
Menlo Park
CA, US
Agent
Townsend and Townsend and Crew
US
Agent
Philip H Albert
US
Assignee
Ricoh Company
US
IPC
G06F 17/30
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