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EXTRACTION OF TONGUE CONTOUR IN REAL-TIME MAGNETIC RESONANCE IMAGING SEQUENCES
Zhang, Dawei; Yang, Minghao; Tao, Jianhua; Wang, Yang; Liu, Bin; Bukhari, Danish
2016
会议名称IEEE International Conference on Acoustic, Speech and Signal Processing(ICASSP)
会议录名称ICASSP 2016
会议日期2016-3
会议地点Shanghai
摘要Real-time magnetic resonance imaging (rtMRI) is becoming a practical tool in speech production research and language pathology observation. It is still a challenge to extract the tongue contour accurately in rtMRI sequences, since tongue is a soft tissue and often touches other organs such as lips and upper mandible. This paper proposes a novel semi-automatic tongue contour extraction method from rtMRI sequences. The initial boundary image is obtained by combined multi-directional Sobel operators in tongue movement region; then a boundary intensity map is constructed to find the most probable tongue contour points by searching for the optimal boundary route with Viterbi algorithm; finally the tongue contour is obtained using B-Spline approximation. The proposed method could obtain accurate tongue contour from rtMRI sequences, even in the cases that some parts of tongue touch other organs. Experiments demonstrate the robustness of the proposed method.
关键词Real-time Magnetic Resonance Imaging Sequences Tongue Contour Extraction Boundary Intensity Map
文献类型会议论文
条目标识符http://ir.ia.ac.cn/handle/173211/14626
专题模式识别国家重点实验室_语音交互
通讯作者Zhang, Dawei
作者单位National Laboratory of Pattern Recognition, Institute of Automation, Chinese Academy of Sciences
推荐引用方式
GB/T 7714
Zhang, Dawei,Yang, Minghao,Tao, Jianhua,et al. EXTRACTION OF TONGUE CONTOUR IN REAL-TIME MAGNETIC RESONANCE IMAGING SEQUENCES[C],2016.
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