Method and Device for Head Tracking and Computer-Readable Recording Medium

An apparatus for performing head tracking, comprising:

• an image input unit configured to receive an input of an image including a facial area;
• and
• a facial area tracking unit configured to track a movement of the facial area,
• wherein the facial area tracking unit is configured to perform:
• a location change search of feature points within a facial area through a comparison with a template learned in advance, if a rotation angle of a facial area is within a predetermined angle range from a front side;
• and
• a location change search of feature points within a facial area through a comparison with a facial area image frame previously inputted, if a rotation angle of a facial area is beyond a predetermined angle range from a front side.

A computer-readable medium having instructions, which when executed by a processor, causes the processor to perform:

• (a) receiving an input of an image including a facial area;
• and
• (b) tracking a movement of the facial area,
• wherein the step (b) comprises:
• (b-1) if a rotation angle of a facial area is within a predetermined angle range from a front side, searching for a location change of feature points within a facial area through a comparison with a template learned in advance;
• and
• (b-2) if a rotation angle of a facial area is beyond a predetermined angle range from a front side, searching for a location change of feature points within a facial area through a comparison with a facial area image frame previously inputted.