Polygon-based technique for the automatic classification of text

Details Polygon-based technique for the automatic classification of text Polygon-based technique for the automatic classification of text

1990-05-21

1991-09-17

Moore, David K.

Image analysis

Histogram processing

For setting a threshold

382 22, 382 38, 358462, G06K 948

Patent

active

050502220

ABSTRACT:
A polygon-based graphics/text separation method is comprised of two sequential processes. First a raster to contour vector conversion step is used to convert a digitized bitmap into a collection of simple polygons. Next a component classification process is used to extract six particularly defined features of each of the individual polygon-based components to enable the separation of graphics and text polygons. Graphical polygons are further classified into four subclasses. Textual polygons are grouped into polygon strings (text strings). Each string contains a sequence of segmented character contour polygons which is ready for an optical character recognition algorithm to convert them into computer understandable ASCII characters.

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