Face recognition
- Check if FILE has been scanned. If so, skip.
- DETECT faces in FILE.
- EXTRACT rotated / normalized FACE into FACE-DATA/ID Q. How to map FILE::FACAE to FACE-DATA/ID
- 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?