Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Tokuda Naoya and Fujiwara Takayuki and Funahashi Takuma and Koshimizu Hiroyasu,A Proposal of Mouth Extraction Method with Suppressed Noise by Using Luminance Transform and Chromatic Characteristics,IEEJ Transactions on Industry Applications,09136339,The Institute of Electrical Engineers of Japan,2011,131,4,592-599,https://cir.nii.ac.jp/crid/1390282679635198592,https://doi.org/10.1541/ieejias.131.592