The density-preserving map is somewhat hard to understand at first, and reminds me of the cover of Fear and Loathing in Las Vegas. Check out the actual research

The density-preserving map is somewhat hard to understand at first, and reminds me of the cover of Fear and Loathing in Las Vegas. Check out the actual researchers' web page (at the bottom) for a conversion of the standard "darker-is-denser" map to the density-preserved map: http://www.ccs.neu.edu/home/amislove/twittermood/ http://www.ccs.neu.edu/home/amislove/twittermood/