Image analysis – Applications – Reading maps – graphs – drawings – or schematics
Patent
1998-06-01
2000-10-17
Tran, Phuoc
Image analysis
Applications
Reading maps, graphs, drawings, or schematics
707502, G06K 900
Patent
active
061343382
ABSTRACT:
The computer automated system and method of converting a digitized raster image of a scanned source document, bearing alphanumeric text relating to a plurality of physical dimensions and to a plurality of edges of a three dimensional object and of a moiety a symbol represents and of an insertion point of the moiety into the three dimensional object, at least one orthographic drawing view having a plurality of lines oriented in a direction to each other and corresponding to the edges of the three dimensional object, and the symbol, into mathematically accurate three dimensional vectors corresponding to the physical dimensions and the edges of the object and moiety and into a mathematically accurate computer drawing file. The digitized raster image is organized into an orthographic viewpoint file corresponding to the view. The file is imported into a corresponding orthographic viewport in a CAD drawing file having three dimensional vector generating capability in an existing CAD system having a COGO subroutine and using an OCR and an OSR operating within the CAD system. The alphanumeric text relating to the symbol is recognized by the OCR and an attributed symbol vector file is created using CAD block attribution techniques. The alphanumeric text relating to the plurality of physical dimensions and to the plurality of edges of the three dimensional object and the insertion point is recognized by the OCR; the symbol is recognized by the OSR. The recognized alphanumeric text and recognized symbol and the attributed symbol vector file are converted by the COGO subroutine into mathematically accurate vectors which can be used for producing accurate drawings and for Computer Assisted Manufacturing. Mechanical, engineering and architectural drawing (plans) are converted by the present invention.
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