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:
Sep. 10, 1996
Filed:
Aug. 18, 1992
Peter G Anderson, Pittsford, NY (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
A system that classifies or identifies hand printed or machine printed alphanumeric characters using an iterated least squares polynomial discriminant method is disclosed. Super-sampling of labeled training characters is performed prior to feature extraction. Feature extraction subsamples individual character images. The feature vectors and associated labelings are used to create a weight matrix. During iteration, the weight matrix, to be subsequently used for identification, is modified by determining which characters are incorrectly classified, or classified with too small a confidence, and replicating those characters during training to strengthen the correct classification. The correct classification is also strengthened by using negative feedback to inhibit incorrect classification by using negative values in the target vectors. The speed of the learning process is enhanced by maintaining intermediate matrices and step wise increasing the amount of each feature vector and the size of the sample set used during training. The memory efficiency utilization is enhanced by maintaining and modifying intermediate matrices and compressing the sparse binary features vectors.