FEATURE LEVEL CALCULATION DEVICE, METHOD AND PROGRAM

摘要

PROBLEM TO BE SOLVED: To accurately calculate a total sum value even when the calculation of a total sum value of pixel values is required in a rectangular area larger than initially assumed.SOLUTION: A feature level calculation device comprises: an accumulation information value holding unit 102 for holding a prescribed low-order bit of total sum value of all element values within an area in which an original point of processing object information and each element position are cater-cornered as an accumulation information value corresponding to each element position within the processing object information in a two-dimensional array; and a rectangular area total sum value calculation unit 103 for calculating a total sum value of element values within a rectangular area regulated within the processing object information using the accumulation information values held by the accumulation information value holding unit 102. The rectangular area total value calculation unit 103 includes: a rectangular area division determination unit 104 for determining the division of a rectangular area on the basis of a result of comparison of the rectangular area size with a prescribed reference area size; and a division rectangular area total sum value calculation unit 105 for calculating a total sum value within a division area according to each divided rectangular area as a division rectangular area total sum value.