features_and_friends.csv
------------------------

This file contains 33 image features for 19,217 MySpace profile pictures. Also
included is the number of friends for each user in the sample. 
The columns are (roughly):

n         - Number of brightness levels
pn        - A measure of the distribution of these levels, a higher number means there	
            are more regions with the same brightness
h,s,v     - Average HSV color for the entire image
ch,cs,cv  - Average HSV for the central portion of the image
r,g,b     - Average RGB levels, as % of median luminosity
sr,sg,sba - Variance in RGB
h1..h4    - The quartiles for luminosity histogram
syx,syy   - Measures of symmetry in X and Y axes
csy       - Measure of symmetry in the central portion of the image
csyx      - Location of vertical axis of greatest symmetry in image center
smx,smy   - Measures of 1-pixel smoothness in X and Y directions
bytes	  - Size of the compressed file (in original file format)
is_gif    - Was the original file a GIF
is_jpg    - Was the original file a JPG
x,y       - Dimensions of the image
ar        - Aspect ratio = x/y
px        - Number of pixels = x*y
ars       - Landscape or Portrait
friends   - Number of friends

   

myspace_faces.tar
-----------------

This file contains 64x64 pixel profile pictures taken from 250,000 MySpace users. 
The data was collected in early May 2009. The number of files is slightly less 
than the total number of users in the sample due to corrupt images being 
downloaded. The files are stored in 250 directories (000 to 249), each containing 
1000 images. The images are renamed to have sequential numbers, with original file 
names scrubbed to remove anything which may directly identify any MySpace user 
account. A small percentage of the images include embedded comments within
metadata, but nothing should be personally identifiable. If so, woops.

Note that a significant number of the pictures are animated, and this animation
has been retained in the process of converting to 64x64 GIFs. The aspect ratio
of the original image has been lost in this process. Sorry. Apart from resizing
no other image processing has taken place. The file format conversion (from GIF
and JPG) and re-sizing was performed by ImageMagick.

I can't share how the users were chosen to be included in this sample. And by
not telling you, it is safe to consider the selection as random browsing through
the friends lists of randomly chosen users.

This file is provided as a resource to researchers and the original images
remain the property of whoever currently owns them. All images were accessed via
publically available MySpace image servers and as far as I see it, that makes
them useable by the general public.

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:wq
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