Abstract
Most attempts to measure motion of the tongue have focused on locating the upper surface of the tongue or specific points on that surface. Recently, we have used our software implementation of optical flow analysis, FlowAnalyzer, to extract measures of tongue motion. The software allows identification of multiple regions of interest, consisting of rectangles whose dimensions and location are user-definable. For example, a large region encompassing the visible tongue body provides general information about the amount and direction (2D) of motion through time; while narrow vertical rectangles can measure the time-varying changes of tongue height at various locations. We will demonstrate the utility of the software, which is freely available upon request to the authors.
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