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+# 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?