| 摘要 |
Techniques are disclosed of obtaining three-dimensional information pertaining to an object of interest, based on a light-pattern image acquired by digitally photographing the object with patterned light being projected onto the object, By an exemplary technique, a local adaptive spatial-filter is configured for the light-pattern image, based on a spatial frequency characteristic of the light-pattern image having a plurality of sub-areas, on a sub-area-by-sub-area basis, and local thresholds are set for the light-pattern image, based on image information acquired by locally applying the spatial filter to the light-pattern image, on a sub-area-by-sub-area basis.
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