Head-pose invariant recognition of facial attributes

A non-transitory computer readable medium containing instructions that, when executed by a processor, cause a programmable device to:

• receive a first training facial image of a head from a plurality of training facial images, the first training facial image having a preselected attribute within a first range of head poses associated with a set of specialized recognition engines (SREs);
• receive a first set of specialized recognition metrics (SRMs) associated with the first training facial image, each SRM of the first set of SRMs associated with a SRE of the set of SREs;
• receive first head pose information for the first training facial image;
• determine a first facial expression metric based on the first set of SRMs and the received first head pose information;
• associate the first facial expression metric with the received first head pose information.

A computing device comprising:

• one or more processors;
• and
• a memory, operatively coupled to the one or more processors, wherein the memory is configured to store instructions that, when executed by the one or more processors, cause the one or more processors to:
• receive a first training facial image of a head from a plurality of training facial images, the first training facial image having a preselected attribute within a first range of head poses associated with a set of specialized recognition engines (SREs);
• receive a first set of specialized recognition metrics (SRMs) associated with the first training facial image, each SRM of the first set of SRMs associated with a SRE of the set of SREs;
• receive first head pose information for the first training facial image;
• determine a first facial expression metric based on the first set of SRMs and the received first head pose information;
• associate the first facial expression metric with the received first head pose information.