User authentication using pose-based facial recognition

A computing device comprising:

• a memory that stores instructions;
• and
• one or more processors to:
• perform an enrollment process for a known user of a computing device by causing the one or more processors to at least:
• receive data indicative of a plurality of images of a face of the known user;
• determine a number of pose buckets of a plurality of pose buckets that include the plurality of images of the face of the known user, wherein:
• each of the plurality of images of the face of the known user is included in at least one pose bucket from a plurality of pose buckets, and
• each pose bucket from the plurality of pose buckets is associated with a respective range of pitch angles of the face of the known user and a respective range of yaw angles of the face of the known user;
• determine whether the number of pose buckets satisfies a threshold number of pose buckets;
• and
• responsive to determining that the number of pose buckets satisfies a threshold number of pose buckets, associate the data indicative of the plurality of images with a user account for the known user;
• subsequent to performing the enrollment process and while the computing device is in a reduced access mode:
• receive data indicative of an image of a face of an unknown user of the computing device;
• and
• determine whether the unknown user is the known user of the computing device by at least comparing the data indicative of the image of the face of the unknown user to data indicative of one or more images of the plurality of images of the face of the known user;
• and
• responsive to determining that the unknown user is the known user, set the computing device to an increased access mode.

A non-transitory computer-readable storage medium encoded with instructions that, when executed by one or more processors of a computing device, cause the one or more processors to:

• perform an enrollment process for a known user of the computing device by causing the one or more processors to at least:
• receive data indicative of a plurality of images of a face of the known user;
• determine a number of pose buckets of a plurality of pose buckets that include the plurality of images of the face of the known user, wherein:
• each of the plurality of images of the face of the known user is included in at least one pose bucket from a plurality of pose buckets, and
• each pose bucket from the plurality of pose buckets is associated with a respective range of pitch angles of the face of the known user and a respective range of yaw angles of the face of the known user;
• determine whether the number of pose buckets satisfies a threshold number of pose buckets;
• and
• responsive to determining that the number of pose buckets satisfies a threshold number of pose buckets, associate the data indicative of the plurality of images with a user account for the known user;
• subsequent to performing the enrollment process and while the computing device is in a reduced access mode:
• receive data indicative of an image of a face of an unknown user of the computing device;
• and
• determine whether the unknown user is the known user of the computing device by at least comparing the data indicative of the image of the face of the unknown user to data indicative of one or more images of the plurality of images of the face of the known user;
• and
• responsive to determining that the unknown user is the known user, set the computing device to an increased access mode.