Patent ID: 11913889
Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 5:
6. A prediction method for predicting a growth direction of a crack that occurs in a subject, the prediction method comprising:
obtaining video of the subject;
deriving displacement of each of a plurality of regions in the video obtained;
selecting, 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
identifying, 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.