George Nibu A, de Mul Frits F M, Qiu Qingjun, Rakhorst Gerhard, Schutte Harm K
University Medical Centre Groningen and University of Groningen, Groningen Voice Research Lab, Department of Biomedical Engineering, 9700 AD Groningen, The Netherlands.
J Biomed Opt. 2008 Nov-Dec;13(6):064024. doi: 10.1117/1.3041164.
We report the design of a novel laser line-triangulation laryngoscope for the quantitative visualization of the three-dimensional movements of human vocal folds during phonation. This is the first successful in vivo recording of the three-dimensional movements of human vocal folds in absolute values. Triangulation images of the vocal folds are recorded at the rate of 4000 fps with a resolution of 256x256 pixels. A special image-processing algorithm is developed to precisely follow the subpixel movements of the laser line image. Vibration profiles in both horizontal and vertical directions are calibrated and measured in absolute SI units with a resolution of +/-50 microm. We also present a movie showing the vocal folds dynamics in vertical cross section.
我们报告了一种新型激光线三角测量喉镜的设计，用于在发声过程中对人类声带的三维运动进行定量可视化。这是首次成功地以绝对值记录人类声带的三维运动。声带的三角测量图像以4000帧/秒的速率记录，分辨率为256x256像素。开发了一种特殊的图像处理算法，以精确跟踪激光线图像的亚像素运动。水平和垂直方向的振动轮廓均以绝对国际单位制进行校准和测量，分辨率为±50微米。我们还展示了一部显示声带垂直横截面动态的影片。
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