| 摘要 |
<p>According to one embodiment, sheet processing includes feature-amount extraction unit (503) configured to extract feature amount from image obtained, standard pattern storage unit (506) configured to prestore standard pattern group for each different soil level, standard pattern group comprising standard pattern for each category, selection unit (53) configured to select one standard pattern group from standard pattern groups, similarity calculation unit (504) configured to calculate similarity, based on standard pattern comprised in one standard pattern group selected, and on feature amount extracted, comparison unit (505) configured to compare similarity calculated with preset threshold, determination unit (505) configured to determine category of sheet when similarity is equal to or greater than threshold, as result of comparison, and control unit (53) configured to control selection unit to select one other standard pattern group which has not been selected, when similarity is smaller than threshold, as result of comparison.</p> |
