Image processing device, image processing method, and recording medium in which program is stored
AssigneeNEC Corporation
InventorKazuyuki Sakurai
Life of this patent
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Abstract
An image processing device is provided with: a movement detection unit—for detecting, from time-series images, a first feature relating to the first movement of a head portion of a person and a second feature relating to the second movement of a body portion, which is a part of the person other than the head portion; and an index value calculation unit for calculating an index value which indicates the degree of consistency between the first feature relating to the first movement of the head portion of the person and the second feature relating to the second movement of the body portion of the person.
Claims8
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.
An image processing method comprising:
- detecting, by a processor and 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, by the processor and 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, by the processor and 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, by the processor, 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.
A non-transitory recording medium storing a program executable by a computer 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.
Dependencies are inferred from the claim text.