2. The apparatus of claim 1 , wherein: the plurality of faces of the characters of the video comprises a plurality of face sets, wherein: a face set comprises a set of faces of a single character in a shot; a shot comprises a set of video frames captured by a single camera in a consecutive recording session; the feature extraction module comprises a shot detection module to detect shots of the video; and the partitioning the plurality of faces into sets of faces comprises merging face sets from separate shots of a character of the characters of the video into a single face set of the character.
2. The apparatus of claim 1 , wherein: the plurality of faces of the characters of the video comprises a plurality of face sets, wherein: a face set comprises a set of faces of a single character in a shot; a shot comprises a set of video frames captured by a single camera in a consecutive recording session; the feature extraction module comprises a shot detection module to detect shots of the video; and the partitioning the plurality of faces into sets of faces comprises merging face sets from separate shots of a character of the characters of the video into a single face set of the character. 6. The apparatus of claim 2 , wherein the feature extraction module is to normalize the faces of the face sets and to extract local scale invariant features from the face sets.