Browse Prior Art Database

Deferred OCR Address Block Find Algorithms

IP.com Disclosure Number: IPCOM000108370D
Original Publication Date: 1992-May-01
Included in the Prior Art Database: 2005-Mar-22
Document File: 3 page(s) / 117K

Publishing Venue

IBM

Related People

Rosenbaum, WS: AUTHOR

Abstract

Deferred OCR processing systems for handling mail pieces are described in U.S. Patent 5,031,223. Deferred OCR will be abbreviated herein as D-OCR. One of the key advantages of D-OCR is the new design alternatives that it provides for handling the mail piece address block find problem. About 20 percent of the mail pieces reportedly are rejected due to problems in finding the address block when automatically processed through state-of-the-art OCR mail sorters. A considerable amount of research has been done on this subject using complex Artificial Intelligence solutions. The gating problems are the 75-100 millisecond processing windows per mail piece in traditional OCR mail processing as well as the unpredictable types of interference and malplacements that can affect the address block.

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Deferred OCR Address Block Find Algorithms

       Deferred OCR processing systems for handling mail pieces
are described in U.S. Patent 5,031,223.  Deferred OCR will be
abbreviated herein as D-OCR.  One of the key advantages of D-OCR is
the new design alternatives that it provides for handling the mail
piece address block find problem.  About 20 percent of the mail
pieces reportedly are rejected due to problems in finding the address
block when automatically processed through state-of-the-art OCR mail
sorters.  A considerable amount of research has been done on this
subject using complex Artificial Intelligence solutions. The gating
problems are the 75-100 millisecond processing windows per mail piece
in traditional OCR mail processing as well as the unpredictable types
of interference and malplacements that can affect the address block.
D-OCR makes possible two new approaches to address find in automatic
(non-operator assist) mode and pattern recognition assists in
operator mode.

      D-OCR initially uses a very simple scheme for finding and
prioritizing candidate video areas as the address block. Referring to
the figure, the first attempt to find the address box starts by
superimposing on the video image of the face of the envelope an "X"
that goes from vertices to vertices of the mail piece.  A video area
is candidate for address block based on its proximity to the
intersection of the "X."  The prime candidate has its video overlayed
by the cross point of the "X." Empirically, and by the nature of
normal addressing being the focal point of a rectangle (envelope),
the majority of instances will have the address box's video impinge
on the cross point.

      With business mailing, Large Volume Mailers and Junk Mail, the
positioning of the address block has a great deal of variability.
Additionally, company logos and advertising create interference along
with extraneous fields and window envelope anomalies.  By extension
to the above-mentioned patent, ambiguous address box positioning is
handled as follows:
      1.   Each discrete block of video on the face of the envelope
has its position measured in polar coordinates relative to the
cross-over of the superimposed "X."
...