A comparative study on the contour tracking algorithms in ultrasound tongue images with automatic re initialization.
The feasibility of an automatic re initialization of contour tracking is explored by using an image similarity based method in the ultrasound tongue sequences. To this end, the re initialization method was incorporated into current state of art tongue tracking algorithms, and a quantitative comparison was made between different algorithms by computing the mean sum of distances errors. The results demonstrate that with automatic re initialization, the tracking error can be reduced from an average of 5 6 to about 4 pixels, a result obtained by using a large number of hand labeled frames and similarity measurements to extract the contours, which results in improved performance.
The Journal of the Acoustical Society of America