计算机科学 ›› 2014, Vol. 41 ›› Issue (5): 296-298.doi: 10.11896/j.issn.1002-137X.2014.05.063
黄秀清,黄巍,高强,陆云,陈传波
HUANG Xiu-qing,HUANG Wei,GAO Qiang,LU Yun and CHEN Chuan-bo
摘要： 为了准确地识别嘴部张合程度,提出了一种基于嘴部状态分类的内唇开度估计算法。将嘴部局部图像从RGB空间转化到YIQ空间,利用牙齿、嘴唇和舌头所对应的Q值的极值点数量和位置分布将嘴部状态分为3类,对每一类分别确定不同的一阶差分范围,使得能在有舌头、牙齿存在的情况下准确地定位出内唇边界点的位置,进而计算出内唇开度值。实验结果表明,基于嘴部状态分类的内唇开度估计算法计算出的内唇开度估计值与实际值之间的相关度达95%,比经典的Saha方法提高了5%。
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