US 2021/0279472 A1 · SYSTEMS AND METHODS FOR ANTI-SPOOFING PROTECTION USING MOTION DETECTION AND VIDEO BACKGROUND ANALYSIS

Abstract

A computing device captures a live video of a user. For a first frame of the live video, the computing device obtains first target positional coordinates of a first target point located a first predetermined distance from the computing device and obtains first background data. For a second frame, the computing device obtains second target positional coordinates of a second target point located a second predetermined distance from the computing device and obtains second background data. The computing device calculates a target motion vector based on the first target point and the second target point and calculates a background motion vector based on feature points in the first background data and the second background data. The computing device determines a difference value between the target motion vector and the background motion vector and determines whether the user is spoofing the computing device based on the difference value.

Claims20

Dependent claims

A method implemented in a computing device, comprising:

capturing a live video of a user;
for a first frame of the live video:
obtaining first target positional coordinates of a first target point located a first predetermined distance from the computing device;
and
obtaining first background data;
for a second frame of the live video:
obtaining second target positional coordinates of a second target point located a second predetermined distance from the computing device;
and
obtaining second background data;
calculating a target motion vector based on the first target point and the second target point;
calculating a background motion vector based on feature points in the first background data of the first frame and the second background data in the second frame;
determining a difference value between the target motion vector and the background motion vector;
and
determining whether the user is spoofing the computing device based on the difference value.

11 more elements

A system, comprising:

a memory storing instructions;
a processor coupled to the memory and configured by the instructions to at least:
capture a live video of a user;
for a first frame of the live video:
obtain first target positional coordinates of a first target point located a first predetermined distance from the system;
and
obtain first background data;
for a second frame of the live video:
obtain second target positional coordinates of a second target point located a second predetermined distance from the system;
and
obtain second background data;
calculate a target motion vector based on the first target point and the second target point;
calculate a background motion vector based on feature points in the first background data of the first frame and the second background data in the second frame;
determine a difference value between the target motion vector and the background motion vector;
and
determine whether the user is spoofing the system based on the difference value.

13 more elements

A non-transitory computer-readable storage medium storing instructions to be implemented by a computing device having a processor, wherein the instructions, when executed by the processor, cause the computing device to at least:

capture a live video of a user;
for a first frame of the live video:
obtain first target positional coordinates of a first target point located a first predetermined distance from the computing device;
and
obtain first background data;
for a second frame of the live video:
obtain second target positional coordinates of a second target point located a second predetermined distance from the computing device;
and
obtain second background data;
calculate a target motion vector based on the first target point and the second target point;
calculate a background motion vector based on feature points in the first background data of the first frame and the second background data in the second frame;
determine a difference value between the target motion vector and the background motion vector;
and
determine whether the user is spoofing the computing device based on the difference value.

11 more elements

Dependencies are inferred from the claim text.

Systems and methods for anti-spoofing protection using motion detection and video background analysis

Life of this patent

Systems and methods for anti-spoofing protection using motion detection and video background analysis

Life of this patent

Abstract

Claims20