A common co-ordinate system for mid-sagittal articulatory measurement
A common co-ordinate system for mid-sagittal articulatory measurement
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发表时间：
2011-06
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通讯作者：
J. Scobbie;E. Lawson;Steve Cowen;J. Cleland;A. Wrench
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作者：
J. Scobbie;E. Lawson;Steve Cowen;J. Cleland;A. Wrench
EMA 关节测量的标准做法是将测量空间的原点设置在标准参考线圈上上切牙和牙龈边界附近。传统的水平尺寸定义为与说话者独特的咬合（咬合）平面平行。我们建议将该惯例扩展到其他仪器，重点是如何使用已知尺寸的一次性且卫生的真空成型咬合板来实现超声舌成像（UTI）。咬合平面轨迹（如上颚轨迹）提供一致的参考，以便在探头位于相对于说话者颅腔的新位置时允许图像旋转和平移。咬合平面还允许具有不同形状上颚的扬声器重叠，并且超声数据与 EMA 共享坐标空间。我们使用六位发言者的样本来说明该提案。平均咬合面斜率可用于回顾性旋转缺乏咬合面测量的超声数据
A standard practice in EMA articulatory measurement is to set the origin of the measurement space near the boundary of the upper incisors and gum, on a standard reference coil. A conventional horizontal dimension is defined as being parallel to the speaker’s unique bite (occlusal) plane. We propose that this convention be extended to other instrumentation, with a focus on how it can be achieved for ultrasound tongue imaging (UTI) in particular, using a disposable and hygienic vacuum-formed bite plate of known size. A bite plane trace, like a palate trace, provides a consistent reference to allow images to be rotated and translated in case the probe is in a new location relative to a speaker’s cranial space. The bite plane also allows speakers with differently shaped palates to be overlaid, and for ultrasound data to share a coordinate space with EMA. We illustrate the proposal using a sample of six speakers. The average bite plane slope could be used to retrospectively rotate ultrasound data that lacks bite-plane measurement