The ROC curves look pretty good, but I can't figure out what happened to the red one. It seems to just quit at .3 precision. Also, I'm a little suspicious of the photo results, as they seem to be able to get a pretty good contour on the people, which we've seen to be a really difficult task even when that is the primary goal. Lastly, I'm a little mixed up about how they chose their kernel in the training section, maybe it has something to do with the balloon density estimators?