Title:
【発明の名称】光学文字認識のための回転的に影響を受けない特性抽出
Document Type and Number:
Japanese Patent JPH04507318
Kind Code:
A
Abstract:
A feature-based optical character recognition system, employing a feature-based recognition device such as a neural network or an absolute distance measure device, extracts a set of features from segmented character images in a document, at least some of the extracted features being at least nearly impervious to rotation or skew of the document image, so as to enhance the reliability of the system. One rotationally invariant feature extracted by the system is the number of intercepts between boundary transitions in the image with at least a selected one of a plurality of radii centered at the centroid of the character in the image.
Inventors:
Barski, Lori Lin
Application Number:
JP51016591A
Publication Date:
December 17, 1992
Filing Date:
May 03, 1991
Export Citation:
Assignee:
Eastman Kodak Company
International Classes:
G06V30/18; G06V30/10; (IPC1-7): G06K9/46
Attorney, Agent or Firm:
Kyozo Yuasa (5 people outside)