avg_pixel.py takes the average pixel color of images in the input and produces the result as a .png output.
I have been using this dataset http://people.eecs.berkeley.edu/~shiry/projects/yearbooks/yearbooks.html when developing.
To make your own dataset, you can make use of the
find_faces.py -i <your-image> file, which finds and saves all faces as black and white images in a .jpg or .png file to
Below are the output images when comparing all women and men, respectively, from years 2000-2013 from the given dataset.