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Summary: THE GLOTTALTOPOGRAPH: A METHOD OF ANALYZING
HIGH-SPEED IMAGES OF THE VOCAL FOLDS
Gang Chen1
Jody Kreiman2
Abeer Alwan1
1
Department of Electrical Engineering, University of California, Los Angeles
2
Division of Head and Neck Surgery, School of Medicine, University of California, Los Angeles
gangchen@ee.ucla.edu, jkreiman@ucla.edu, alwan@ee.ucla.edu
ABSTRACT
High-speed video provides a way to record physiological vi-
brational patterns of the vocal folds. Due to the large amount
of data it produces, many methods have been proposed to re-
duce raw images to the underlying vibrational patterns. Pre-
vious methods either focus on a certain location on the vo-
cal folds, or a certain frequency of vibrational activity. In
this paper, we propose the "glottaltopograph" which is based
on principal component analysis of pixels' gray scale time
courses. This method reveals the overall synchronization of
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