The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 21, 1999
Filed:
Dec. 03, 1997
Alan S Ratner, Clarksville, MD (US);
Abstract
The present invention is a method of identifying the script and orientation of a document image by identifying each set of connected pixels in the document image; computing the number of pixels in each set of connected pixels; computing the horizontal mean position of the pixels; computing the vertical mean position of the pixels; computing the horizontal extent of the pixels; computing the vertical extent of the pixels; computing a plurality of moment values for each set of connected pixels in the document image using a unique normalized centered moment calculation; grouping the moment values according to moment type; sorting the moment values within each moment group according to moment value; selecting moment values from each rank ordered moment group in order to characterize the document image; comparing the selected moment values to moment values for representative document images in a number of scripts and orientations; defining the script and orientation of the document image as being the same as the representative document that it compares most favorably to; selecting at least one script of interest to the user; rotating the document image to a user-defined orientation if the document image is of a script of interest to the user; and presenting the rotated document to the user if the document image is of a script of interest to the user.