CASIA OpenIR  > 模式识别国家重点实验室  > 语音交互
EXTRACTION OF TONGUE CONTOUR IN REAL-TIME MAGNETIC RESONANCE IMAGING SEQUENCES
Zhang, Dawei; Yang, Minghao; Tao, Jianhua; Wang, Yang; Liu, Bin; Bukhari, Danish
2016
Conference NameIEEE International Conference on Acoustic, Speech and Signal Processing(ICASSP)
Source PublicationICASSP 2016
Conference Date2016-3
Conference PlaceShanghai
AbstractReal-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.
KeywordReal-time Magnetic Resonance Imaging Sequences Tongue Contour Extraction Boundary Intensity Map
Document Type会议论文
Identifierhttp://ir.ia.ac.cn/handle/173211/14626
Collection模式识别国家重点实验室_语音交互
Corresponding AuthorZhang, Dawei
AffiliationNational Laboratory of Pattern Recognition, Institute of Automation, Chinese Academy of Sciences
Recommended Citation
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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