| CPC G01N 21/8851 (2013.01) [G01B 11/16 (2013.01); G06T 7/001 (2013.01); G06T 7/0004 (2013.01); G01M 5/0033 (2013.01); G01N 2021/8861 (2013.01); G01N 2021/8867 (2013.01); G01N 2203/0066 (2013.01)] | 6 Claims |
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1. A prediction device for predicting a growth direction of a crack that occurs in a subject, the prediction device comprising:
a processor; and
a memory,
wherein, using the memory, the processor:
obtains video of the subject;
derives displacement of each of a plurality of regions in the video obtained;
selects, from among the plurality of regions, two or more regions each having displacement of which a difference from displacement of a reference region included in the plurality of regions is within a threshold value; and
identifies, as the growth direction, a longitudinal direction of a collective region made up of the two or more regions selected,
wherein the deriving of the displacement is performed on a pixel basis or on a sub-pixel basis and is performed by determining a partial spatial range in the video obtained and deriving displacement for each of the plurality of regions in the determined partial spatial range of the video obtained, the partial spatial range including at least the reference region, and
wherein the displacement to be derived is a displacement between frames.
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