Method and a system for substantially eliminating erroneously recognized non-solid lines
AssigneeRicoh Company, Ltd.
InventorYuko Sugiura
Life of this patent
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Abstract
Certain characters and symbols are often erroneously recognized as non-solid periodic lines such as dotted lines and single chain lines. The erroneous recognition stems out from recognition criteria which are generally based upon the characteristics of the line elements such as height, width and a distance between the elements. To substantially eliminate the erroneous recognition, one preferred embodiment according to the current invention substantially eliminates erroneous candidates for non-solid periodic lines based upon a distance to adjacent text characters.
Claims23
A method of determining non-solid periodic line, comprising the steps of:
- a) inputting image data including continuous elements;
- b) determining circumscribing areas each enclosing a continuous element;
- c) selecting candidates for a non-solid line having one of predetermined periodic patterns based upon the circumscribing areas;
- and
- d) eliminating one of the candidates based upon a predetermined relation of a corresponding one of the circumsribing areas to others of the circumscribing areas containing text characters adjacent to the one of the candicates.
A system for determining non-solid periodic line, comprising:
- an input unit for inputting image data including continuous elements;
- a circumscribing unit operationally connected to said input unit for determining circumscribing areas each enclosing a continuous element;
- a non-solid line selection unit operationally connected to said circumscribing unit for selecting candidates for a non-solid line having one of predetermined periodic patterns based upon the circumscribing areas;
- and
- a non-solid periodic line unit operationally connected to said non-solid line selection unit for eliminating one of the candidates based upon a predetermined relation of a corresponding one of the circumscribing areas to others of the circumscribing areas containing text characters adjacent to the one of the candidates.
A computer program stored on a medium for executing computer instructions so as to determine non-solid periodic line in text image data, the computer program performing the steps of:
- e) inputting the text image data including continuous elements;
- f) determining circumscribing areas each enclosing a continuous element;
- g) selecting candidates for a non-solid line having one of predetermined periodic patterns based upon the circumscribing areas;
- and
- h) eliminating one of the candidates based upon a predetermined relation of a corresponding one of the circumscribing areas to others of the circumscribing areas containing text characters adjacent to the one of the candidates.
Dependencies are inferred from the claim text.