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Browse Prior Art Database

Video Pattern Preprocessor for Software Character Recognition

IP.com Disclosure Number: IPCOM000078468D
Original Publication Date: 1973-Jan-01
Included in the Prior Art Database: 2005-Feb-26
Document File: 2 page(s) / 30K

Publishing Venue

IBM

Related People

Bond, MF: AUTHOR [+5]

Abstract

The system shown transmits video images to a computer for storage, pattern recognition and similar functions. Audit information is transmitted along with the image, for control purposes.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 81% of the total text.

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Video Pattern Preprocessor for Software Character Recognition

The system shown transmits video images to a computer for storage, pattern recognition and similar functions. Audit information is transmitted along with the image, for control purposes.

Scanner 10 causes a beam of light to sweep over document 11 in a raster scan. Detector 12 converts the reflected light into digitized electrical signals, representing characters or other patterns on the document. Data formatter 21 arranges the signals into groups whose order depends upon the scanning direction of scanner 10. Minimum character requirement (MCR) logic 22 provides an indication of the beginning of each new character, while segmentation logic 23 indicates the end of each character. Blank-scan counter 24 measures the distances between the scanning-raster extremities and the top and bottom of each character. Line-centering logic 26 receives signals from registration logic 25 to maintain proper positioning of each character within the raster. All the above functions may be provided by conventional means, and other functions may also be included.

Trailer assembler 27 receives the audit data from untis 22-25 and places it into a defined format of bits, which indicate the beginning and end coordinates of each character, the number of white raster cells above and below the character, the number of blank scans between characters, and so forth. Output gates 28 transmit the video data to a computer on line 29 as a s...