| 摘要 |
PROBLEM TO BE SOLVED: To divide domains in a document image by using a layout of multi-columns in either case, clear or irregular. SOLUTION: A method comprises the following steps: for compensating 102 a skew of an input document image 101, then for generating 103 a compressed image, for extracting 104 small domains, for categorizing 106 the small domains in the line direction into candidates for a series of characters and the like, for extracting 107 vacant parts between columns by using successive long white runs from the small domains of candidates for a series of characters, for deciding 108 type of layout of multi-columns as a single column, a plurality of columns or free column, for selecting 109 the vacant parts depending on the type, and for extracting the domain of sentences by integrating 110 the small domains. COPYRIGHT: (C)2004,JPO&NCIPI
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