Analysis of Features for Efficient Japanese Vowel Recognition
Takeshi Saitoh, Mitsugu Hisagi, Rikuto Konishi · IEICE Transactions on Information and Systems · 2007
This paper analyses the features required to efficiently recognize five Japanese vowels for lip-reading. Various features, such as shape and radius, are calculated from the lip region and fed to the k Nearest Neighbor method. We calculated 15 feature sets and found that the feature set including the area and aspect ratio of the mouth cavity is effective for Japanese vowel recognition.