EXTRACTION OF TONGUE CONTOUR  IN REAL-TIME MAGNETIC RESONANCE IMAGING SEQUENCES

	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/173211/41110
专题	多模态人工智能系统全国重点实验室_智能交互
通讯作者	Zhang, Dawei
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.