FIELD: information technology.
SUBSTANCE: apparatus has a conversion unit, a selection unit and a determination unit. Configuration of the conversion unit provides reduction processing on a first input image in order to generate one or more reduced images. Configuration of the selection unit provides selection of a special point from the first input image and selection of special points from each of the one or more reduced images. Configuration of the determination unit provides determination of a stable special point with high reproducibility of selection when reducing an image from special points, selected by the selection unit in each of two or more images from a group of images. The group of images includes a first input image and one or more reduced images. The position of the stable special point corresponds to the position of the special point of the first input image.
EFFECT: ensuring comparison of images by selecting special points having high reproducibility of selection.
9 cl, 7 dwg
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Authors
Dates
2011-09-20—Published
2009-09-24—Filed