http://ubicomp.org/ubicomp2014/proceedings/ubicomp_adjunct/workshops/CEA/p589-kawano.pdf
https://www.site.uottawa.ca/~shervin/pubs/FoodRecognition-IEEE-TIM-final.pdf
http://www.vbettadapura.com/egocentric/food/Food-Bettadapura15.pdf
http://research.microsoft.com/en-us/um/redmond/groups/cue/publications/menumatch.pdf