Method and apparatus for classifying documents

Details Method and apparatus for classifying documents Method and apparatus for classifying documents

1993-11-24

1995-05-09

Couso, Yon J.

Image analysis

Image transformation or preprocessing

Changing the image coordinates

382317, G06K 932

Patent

active

054147816

ABSTRACT:
A method and apparatus for identifying documents and classes of documents. The documents are provided with distinctive logotypes which are preferably at the top of each document. The coding of the logotypes is by the use of distinctive angular alignments in the logotype. The logotype is scanned at different angles in order to determine angular "signatures" for comparison with a predetermined power distribution.

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Baird "The Skew Angle of Printed Documents" Preceedings of the SPSE Symposium on Hybrid Imaging System, pp. 21-24, 1987.

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