Integrated method and apparatus for character and symbol recogni

Details Integrated method and apparatus for character and symbol recogni Integrated method and apparatus for character and symbol recogni

1991-08-09

1993-10-05

Mancuso, Joseph

Image analysis

Histogram processing

For setting a threshold

382 15, 382 38, 395 23, 395 53, 395 54, C06K 962

Patent

active

052512681

ABSTRACT:
An apparatus and method for recognizing written items including characters and symbols is disclosed. A scanner is utilized for scanning the characters and symbols. A recognition module is used to confidently identify the scanned characters and symbols. The recognition module includes a mechanism for recognizing characters. This mechanism includes a character recognition rule base which yields identified characters and unidentified characters. The unidentified characters are conveyed to neural networks for recognition. The recognition module also includes a mechanism for recognizing symbols. This mechanism includes a symbol recognition rule base which yields identified symbols and unidentified symbols. The unidentified symbols are conveyed to neural networks for recognition. The recognition module also includes a mechanism for context processing of the characters and symbols. The context processor utilizes a multilevel blackboard with a number of ascending levels. The blackboard combines characters and symbols into logical units. The blackboard also serves to verify the identity of the characters and symbols. The resultant data from the recognition module is placed in a metafile which is conveyed to a modification module. The modification module includes graphics editing software to edit the scanned characters and symbols. After editing, a translator is used to convert the scanned characters and symbols to a format suitable for a CAD system or data base.

REFERENCES:
patent: 4589142 (1986-05-01), Bednar
patent: 4748675 (1988-05-01), Suzuki et al.
patent: 4802230 (1989-01-01), Horowitz
patent: 4876731 (1989-10-01), Loris et al.
patent: 4941122 (1990-07-01), Weideman
patent: 4949388 (1990-08-01), Bhaskaran
patent: 4975975 (1990-12-01), Filipski
patent: 5077807 (1991-12-01), Bokser
patent: 5086479 (1992-02-01), Takenaga
Bhaskaran, Parvathy et al; "The Use of Artificial Intelligence Techniques in Drawing Management," Society of Manufacturing Engineers; MS89-693; 1989.
Filipski, Alan; "Recognition of Hand-lettered Characters in the GTX 5000 Drawing Processor," IEEE; Apr. 1989.
Colley, Robert W. et al; "An Entity-Relationship Model for Nuclear Power Plants," ANS Topical Meeting on Computer Applications for Nuclear Power Plant Operation and Control; pp. 765-769.
Vlontzos, J. A.; "A Hierarchical System for Character Recognition With Stochastic Knowledge Representation," 1988 IEEE International Conference on Neural Networks, 1-601-616.
Khotanzad, A. and Lu, J. H.; "Distortion Invariant Character Recognition by a Multi-Layer Perceptron and Back-Propagation Learning," 1988 IEEE International Conference on Neural Networks, 1-601-616.

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