Phonovibrography:: Mapping high-speed movies of vocal fold vibrations into 2-D diagrams for visualizing and analyzing the underlying laryngeal dynamics
Phonovibrography:: Mapping high-speed movies of vocal fold vibrations into 2-D diagrams for visualizing and analyzing the underlying laryngeal dynamics
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DOI：
10.1109/tmi.2007.903690
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发表时间：
2008-03-01
影响因子：
10.6
通讯作者：
Doellinger, Michael
中科院分区：
文献类型：
--
作者：
Lohscheller, Joerg;Eysholdt, Ulrich;Doellinger, Michael
内窥镜高速喉镜结合图像分析策略是最有前途的方法来调查声带振动和语音障碍之间的相互关系。目前，由于缺乏一个客观、标准化的分析方法，声带振动的特征还没有得到准确的描述。我们提出了一种可视化和分析策略，将振动声带的分割边缘转换为一个单一的2-D图像，表示Phonovibrogram（PVG）。在PVG内，声带振动的个体类型通过特定的几何图案而变得独特。PVG几何形状提供了对喉不对称的类型和程度的直观访问，并且可以使用图像分割方法进行量化。PVG分析应用于14个代表性的录音来自高速数据库，包括正常和病理的声音。我们证明，PVGs能够区分和量化不同类型的正常和病理声带振动。PVG几何形状的客观和精确的量化可能有可能实现一种新的分类声带振动。
Endoscopic high-speed laryngoscopy in combination with image analysis strategies is the most promising approach to investigate the interrelation between vocal fold vibrations and voice disorders. So far, due to the lack of an objective and standardized analysis procedure a unique characterization of vocal fold vibrations has not been achieved yet. We present a visualization and analysis strategy which transforms the segmented edges of vibrating vocal folds into a single 2-D image, denoted Phonovibrogram (PVG). Within a PVG the individual type of vocal fold vibration becomes uniquely characterized by specific geometric patterns. The PVG geometries give an intuitive access on the type and degree of the laryngeal asymmetry and can be quantified using an image segmentation approach. The PVG analysis was applied to 14 representative recordings derived from a high-speed database comprising normal and pathological voices. We demonstrate that PVGs are capable to differentiate and quantify different types of normal and pathological vocal fold vibrations. The objective and precise quantification of the PVG geometry may have the potential to realize a novel classification of vocal fold vibrations.