Datasets from:
  http://www.cc.gatech.edu/~hays/compvision2015/proj5/

training_faces:
  These are 6000 cropped 36x36 faces from the Caltech Web Faces dataset.
  http://www.vision.caltech.edu/Image_Datasets/Caltech_10K_WebFaces/

  They were prepared by James Hays by eliminating images that are not
  large or frontal enough, then cropping and resizing.

training_nonfaces:
  These are 250 non-face images from datasets by Wu et al. and the SUN
  scene database.
  http://c2inet.sce.ntu.edu.sg/Jianxin/RareEvent/rare_event.htm
  http://groups.csail.mit.edu/vision/SUN/

  They were prepared by James Hays by eliminating animal faces, illustrated
  faces, and duplicate images.


testing_faces:
testing_nonfaces:
  These are 500 additional faces and 500 additional 36x36 nonface images.
