Patent ID: 11908157
Assignee: NEC CORPORATION
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. An image processing device comprising:
a memory storing a computer program; and
at least one processor configured to run the computer program to perform:
detecting, from time-series images, a first feature relating to a first motion of a head portion of a person and a second feature relating to a second motion of a body portion that is a region other than the head portion of the person;
calculating, as one integration feature, a weighted sum of the first feature relating to the first motion of the head portion of the person and the second feature relating to the second motion of the body portion of the person;
calculating, from the one integration feature, an index value indicating a degree of consistency between the first feature relating to the first motion of the head portion of the person and the second feature relating to the second motion of the body portion of the person; and
determining whether the person is spoofing another person, based on the index value, such that spoofing is detected based on a mismatch between the head portion and the body portion of the person.