# Face recognition

1. Check if FILE has been scanned. If so, skip.
2. DETECT faces in FILE.
3. EXTRACT rotated / normalized FACE into FACE-DATA/ID
  Q. How to map FILE::FACAE to FACE-DATA/ID
4. CLUSTER / RECOGNIZE all FACE-DATA/ID
  Q. Does this require N:(N-1) comparisons where N is number of total
     FACES, or can it be N:C where C is the number of "SAME" cluster?