Image analysis – Image transformation or preprocessing – Measuring image properties
Patent
1998-03-04
2000-11-21
Mehta, Bhavesh
Image analysis
Image transformation or preprocessing
Measuring image properties
382297, G06K 936
Patent
active
061514233
ABSTRACT:
The correct orientation for a document scanned by an OCR system is determined from the confidence factors associated with multiple character images identified in the document. One disclosed orientation determination module (258) for determining the correct page orientation includes a confidence factor values buffer (402), a comparison module (404), a reference value buffer (406), a sort module (408), and a decision module (410). The orientation determination module (258) obtains arrays of confidence factor values that respectively correspond to first and second page orientations. The confidence factor values buffer (402) stores and indexes the confidence factor values, the sort module (408) sorts the values, and the reference value buffer (406) stores comparison information such as threshold levels. The comparison module (404) compares the first and second arrays of confidence factor values, such as by accessing selected values in the arrays, averaging such selected values, and determining whether and how many values exceed threshold levels. The decision module (410) determines the correct, or proper, document orientation.
REFERENCES:
patent: 5034733 (1991-07-01), Okazawa et al.
patent: 5038393 (1991-08-01), Nanba
patent: 5046116 (1991-09-01), Melen
patent: 5077811 (1991-12-01), Onda
patent: 5235651 (1993-08-01), Nafarieh
patent: 5257323 (1993-10-01), Melen et al.
patent: 5301036 (1994-04-01), Barrett et al.
patent: 5471549 (1995-11-01), Kurosu et al.
patent: 5479525 (1995-12-01), Nakamura et al.
patent: 5649033 (1997-07-01), Morikawa et al.
patent: 5696841 (1997-12-01), Nakatsuka
patent: 5880451 (1999-03-01), Smith et al.
Canon Kabushiki Kaisha
Mehta Bhavesh
Patel Kanji
LandOfFree
Character recognition with document orientation determination does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Character recognition with document orientation determination, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Character recognition with document orientation determination will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1265394