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An automatic method to detect and track the glottal gap from high speed videoendoscopic images.

Andrade-Miranda G, Godino-Llorente JI, Moro-Velázquez L, Gómez-García JA - Biomed Eng Online (2015)

Bottom Line: Thanks to the ROI implementation, our technique is robust to the camera shifting and also the objective test proved the effectiveness and performance of the approach in the most challenging scenarios that it is when exist an inappropriate closure of the vocal folds.The novelties of the proposed algorithm relies on the used of temporal information for identify an adaptive ROI and the use of watershed merging combined with active contours for the glottis delimitation.Additionally, an automatic procedure for synthesize multiline VKG by the identification of the glottal main axis is developed.

View Article: PubMed Central - PubMed

Affiliation: Centro de Tecnología Biomédica, Universidad Politécnica de Madrid, Campus de Montegancedo, Crta. M40 km, 38, Madrid, Spain. gxandrade@ics.upm.es.

ABSTRACT

Background: The image-based analysis of the vocal folds vibration plays an important role in the diagnosis of voice disorders. The analysis is based not only on the direct observation of the video sequences, but also in an objective characterization of the phonation process by means of features extracted from the recorded images. However, such analysis is based on a previous accurate identification of the glottal gap, which is the most challenging step for a further automatic assessment of the vocal folds vibration.

Methods: In this work, a complete framework to automatically segment and track the glottal area (or glottal gap) is proposed. The algorithm identifies a region of interest that is adapted along time, and combine active contours and watershed transform for the final delineation of the glottis and also an automatic procedure for synthesize different videokymograms is proposed.

Results: Thanks to the ROI implementation, our technique is robust to the camera shifting and also the objective test proved the effectiveness and performance of the approach in the most challenging scenarios that it is when exist an inappropriate closure of the vocal folds.

Conclusions: The novelties of the proposed algorithm relies on the used of temporal information for identify an adaptive ROI and the use of watershed merging combined with active contours for the glottis delimitation. Additionally, an automatic procedure for synthesize multiline VKG by the identification of the glottal main axis is developed.

No MeSH data available.


Related in: MedlinePlus

Proposed framework. Graphic representation of the different steps followed to segment the glottal gap: pre-processing, ROI detection, watershed first region merging, correlation merging, and post-proccessing
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Fig2: Proposed framework. Graphic representation of the different steps followed to segment the glottal gap: pre-processing, ROI detection, watershed first region merging, correlation merging, and post-proccessing

Mentions: This section describes the framework proposed for the automatic tracking of the glottal gap. Figure 2 summarizes graphically the different steps of the process. In the following subsections the different steps of the procedure are detailed.Fig. 2


An automatic method to detect and track the glottal gap from high speed videoendoscopic images.

Andrade-Miranda G, Godino-Llorente JI, Moro-Velázquez L, Gómez-García JA - Biomed Eng Online (2015)

Proposed framework. Graphic representation of the different steps followed to segment the glottal gap: pre-processing, ROI detection, watershed first region merging, correlation merging, and post-proccessing
© Copyright Policy - OpenAccess
Related In: Results  -  Collection

License 1 - License 2
Show All Figures
getmorefigures.php?uid=PMC4625946&req=5

Fig2: Proposed framework. Graphic representation of the different steps followed to segment the glottal gap: pre-processing, ROI detection, watershed first region merging, correlation merging, and post-proccessing
Mentions: This section describes the framework proposed for the automatic tracking of the glottal gap. Figure 2 summarizes graphically the different steps of the process. In the following subsections the different steps of the procedure are detailed.Fig. 2

Bottom Line: Thanks to the ROI implementation, our technique is robust to the camera shifting and also the objective test proved the effectiveness and performance of the approach in the most challenging scenarios that it is when exist an inappropriate closure of the vocal folds.The novelties of the proposed algorithm relies on the used of temporal information for identify an adaptive ROI and the use of watershed merging combined with active contours for the glottis delimitation.Additionally, an automatic procedure for synthesize multiline VKG by the identification of the glottal main axis is developed.

View Article: PubMed Central - PubMed

Affiliation: Centro de Tecnología Biomédica, Universidad Politécnica de Madrid, Campus de Montegancedo, Crta. M40 km, 38, Madrid, Spain. gxandrade@ics.upm.es.

ABSTRACT

Background: The image-based analysis of the vocal folds vibration plays an important role in the diagnosis of voice disorders. The analysis is based not only on the direct observation of the video sequences, but also in an objective characterization of the phonation process by means of features extracted from the recorded images. However, such analysis is based on a previous accurate identification of the glottal gap, which is the most challenging step for a further automatic assessment of the vocal folds vibration.

Methods: In this work, a complete framework to automatically segment and track the glottal area (or glottal gap) is proposed. The algorithm identifies a region of interest that is adapted along time, and combine active contours and watershed transform for the final delineation of the glottis and also an automatic procedure for synthesize different videokymograms is proposed.

Results: Thanks to the ROI implementation, our technique is robust to the camera shifting and also the objective test proved the effectiveness and performance of the approach in the most challenging scenarios that it is when exist an inappropriate closure of the vocal folds.

Conclusions: The novelties of the proposed algorithm relies on the used of temporal information for identify an adaptive ROI and the use of watershed merging combined with active contours for the glottis delimitation. Additionally, an automatic procedure for synthesize multiline VKG by the identification of the glottal main axis is developed.

No MeSH data available.


Related in: MedlinePlus