| 摘要 |
PROBLEM TO BE SOLVED: To obtain an image processor in which character/pattern separation of binarized image data can be carried out well, even when it is performed by varying the degree of adjustment of the threshold at the time of binarization. SOLUTION: Mean value of respective pixels in a first region is calculated (S102) from the first region including the objective pixel being binarized by a binarization means 17, the mean value of respective pixels in a second region is calculated (S103) from a second region which is larger than the first region including the objective pixel, and then the means values and compared (S104). Based on the comparison results, the binarization means 17 the degree of adjustment for threshold is varied at the time of binarizing the objective pixel (S109-S111).
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