G - Physics – 06 – K
Patent
G - Physics
06
K
354/65
G06K 9/34 (2006.01)
Patent
CA 1309180
A METHOD FOR DETECTING CHARACTER STRINGS Abstract A method for detecting character storing regions in an image obtained by reading a document includes the steps of storing image data in memory aligned with a main scanning direction. Positional data representative of respective black runs in scan lines is generated by accessing the memory. Black run data from respective adjoining lines are compared, and, where part of a black run does not adjoin a black run in a preceding line, but exists in a succeeding line, judging that part to be a boundary candidate of a first kind. Where a black run does not adjoin a black run in a succeeding line, but exists in a preceding line, judging that part to be a boundary candidate of a second kind. Positional data relating to these first and second kinds in table storage means, and then looking up the table to locate a pair of boundary candidates of the first and second kinds having a common part. It is then taken that a rectangular region whose boundaries include at least a part of each boundary candidate of the pair is a character string region, and position data for that string is then generated. JA9-88-005
592549
International Business Machines Corporation
Saunders Raymond H.
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