Bibliography

(eng): Videokymography is a novel video recording technique used in laryngology and phoniatrics for examination of vocal folds. A videokymographic camera acquires brightness values only in one row but with a high-speed rate of 7200 lines/s. It can thus capture gradual movements of vocal folds, albeit in one dimension. The resulting videokymogram is a spatio-temporal image of vocal fold vibrations along a line perpendicular to the glottal dorsoventral axis over a short period of time. The advantages of videokymography include low costs and low amount of data to process. Manual analysis of videokymograms is, however, difficult and time-consuming, mainly due to noise, reflections and low contrast in the images as well as high number of vocal fold parameters. The possibility of computer-aided diagnostics is thus of great interest. The objective of this project was to develop (semi)automatic methods for measurement of selected vocal fold features.