The study to estimate the learning stage of pronunciation for hearing impaired subject from the digital video picture to speak

本研究试图从数字视频图像中估计听障儿童说话的学习阶段和发音。拍摄的视频画面是在个人计算机上拍摄的，拍摄对象戴在嘴唇上，用两个ccd摄像头说40个单词。用Ribrary公司的MOVE-TR/3D软件对嘴唇上六个标志物的每一个位置进行估计。从对正常受试者的实验结果可以看出，下面提到的12个身体素质是有用的。(1)点A的横坐标(2)点A在x方向的速度分量(3)点D的纵坐标(4)点A在y方向的速度分量(5)线段的长度AB(距离AB)(6)距离AB的变化率(7)线段的长度Cd(距离Cd)(8)距离Cd的变化率(9)角Cad(∠Cad)(10)∠Cad的变化率(11)角adb(∠adb)(12)∠adb的变化率可以看出，身体素质的极值为(1)，(3)、(5)、(7)、(9)、(11)的性质变化率的极值有助于区分元音，而它们的性质变化率的极值有助于区分辅音。就本研究而言，听障受试者的语音学习阶段不能用上述品质来衡量。但发音的学习阶段将被准确地估计为舌头运动的质量，以及它们的质量。

The study is to try to estimate the learning stage et pronunciation for the hearing impaired subjeru from the digital video picture to speak. The video picture to record subject putting sic makers on the lip and speaking forty words with two CCD cameras was captured in the personal computer. Every position of six markers on the lips is estimated by Move-tr/3D (the software of Ribrary Co. From the result of experiment for the normal subject, it is seen that twelve physical qualities mentioned here under are useful. (1) The abscissa of the point A (2) The component of velocity of the point A in the x direction (3) The ordinate of the point D (4) The component of velocity of the point A in the y direction (5) The length of the segment AB (distance AB) (6)The change rate of the distance AB (7) The length of the segment CD (distance CD) (8) The change rate of the distance CD (9) The angle CAD (∠CAD) (10) The change rate of the ∠CAD (11) The angle ADB (∠ADB) (12) The change rate of the ∠ADB It is seen that the extreme value of physical qualities for (1),(3),(5),(7),(9), and (11) is useful to discriminate the vowel, and the extreme value of the change rate of their qualities is useful to discriminate the consonant. As for this study, the learning stage of pronunciation for the hearing impaired subject cannot be estimated by the above mentioned qualities. But the learning stage of pronunciation will be estimated accurately by the quality for the movement of the tongue in addition to their qualities.